| **Note 5 - Benefit Plans**                                        | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| Pension and Other Postretirement Benefits Disclosure [Text Block] | 5.           BENEFIT      PLANSThe net periodic      benefit cost for the three months ended March 31 is as      follows (in thousands):  2012  2011 Service              cost $130  $96 Interest              cost  88   81 Expected              return on plan assets  (87)  (70)Amortization              of net loss  41   5 Amortization              of prior service cost  (2)  (6)  $170  $106 Our 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 our pension plan to reduce the unfunded      liability. In the first quarter of 2012 we made an additional      contribution of $0.39 million in order to exceed an 80%      funding level as measured at January 1, 2012. Also in the      first quarter of 2012 we made required contributions of $0.1      million and based on current assumptions, we expect to make      required quarterly contributions of $0.13 million for each of      the next four quarters.We have 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. We 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 three months ended March      31, 2012, we issued 64 thousand shares of common stock in      connection with the Company match for our 401(k) Plan in lieu      of an aggregate cash match of $78 thousand. |

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| - Definition
The entire disclosure for pension and other postretirement benefits.
+ References
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