| **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 relating to the Company's Pension Plan is as      follows (in thousands):                        Three              Months                         Ended              March 31,                         2013  2012 Service              cost $146  $130 Interest              cost  90   88 Expected              return on plan assets  (100)  (87)Amortization              loss  66   41 Amortization              of prior service cost  (2)  (2)                        $200  $170 The 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 first quarter of 2013, the Company      was not required to make any contributions to its pension      plan. However, based on current assumptions, the Company      expects to make required contributions of $0.37 million in      the next twelve months.The Company has 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 three months ended March      31, 2013 and 2012, the Company issued 97 thousand and 64      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 $70 thousand and $78 thousand,      respectively. |

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