|**Note 5 - Benefit Plans**                                        | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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|**Compensation and Retirement Disclosure [Abstract]**             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Pension and Other Postretirement Benefits Disclosure [Text Block] | 5.             BENEFIT PLANSThe net periodic benefit cost relating to the Company's U.S. Pension Plan is as follows (in thousands):Three Months
          Ended
          September 30,
        
        
        Nine Months
          Ended
          September 30,2013
        
        
        2012
        
        
        2013
        
        
        2012Service cost
        
        $
        140
        
        
        $
        130
        
        
        $
        421
        
        
        $
        390Interest cost
        
        
        94
        
        
        
        88
        
        
        
        282
        
        
        
        264Expected return on plan assets
        
        
        (99
        )
        
        
        (87
        )
        
        
        (297
        )
        
        
        (261
        )Amortization of net loss
        
        
        62
        
        
        
        41
        
        
        
        185
        
        
        
        123Amortization of prior service cost
        
        
        (2
        )
        
        
        (2
        )
        
        
        (6
        )
        
        
        (6
        )$
        195
        
        
        $
        170
        
        
        $
        585
        
        
        $
        510The Company's policy is to fund the minimum contributions required under the Employee Retirement Income Security Act (ERISA) and, subject to cash flow levels, the Company may choose to make a discretionary contribution to its pension plan to reduce the unfunded liability. In the third quarter of 2013 the Company made required contributions of $0.2 million to its pension plan bringing the total contribution for the nine months ended September 30, 2013 to $0.3 million. Based on current assumptions, the Company expects to make required contributions of $0.4 million in the next twelve months.The Company has adopted a 401(k) Plan exclusively for the benefit of participants and their beneficiaries. All U.S. employees of the Company are eligible to participate in the 401(k) Plan. The Company may make discretionary matching contributions of the compensation contributed by the participant. The Company has the option of making the matching contributions in cash or through shares of Company common stock. During the nine months ended September 30, 2013 and 2012, the Company issued 174 thousand and 175 thousand shares of common stock in connection with the Company match for the Company's 401(k) Plan in lieu of an aggregate cash match of $179 thousand and $220 thousand, respectively.Substantially all employees of the Company's foreign subsidiaries receive pension coverage, at least to the extent required, through plans that are governed by local statutory requirements. Contributions to these plans are typically based on specified percentages of the employees' salaries.
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|                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Service cost                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Interest cost                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Expected return on plan assets                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Amortization of net loss                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Amortization of prior service cost                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
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