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Note 5 - Employee Benefit Plans (Detail) - The following table sets forth the Plan鈥檚 changes in benefit obligation, changes in fair value of plan assets, and funded status: (USD $)
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12 Months Ended | |||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2012
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| Change in projected benefits obligation: | 听 | 听 | 听 | 听 |
| Projected benefit obligation at beginning of year | $ 3,640,465 | $ 3,073,740 | 听 | $ 4,030,848 |
| Service cost | 67,083 | 96,083 | 96,251 | 听 |
| Interest cost | 168,122 | 171,493 | 169,460 | 听 |
| Actuarial (gain) loss | 297,638 | 424,503 | 听 | 听 |
| Benefits paid | (142,460) | (125,354) | 听 | 听 |
| Projected benefit obligation at end of year | 4,030,848 | 3,640,465 | 听 | 听 |
| Change in plan assets: | 听 | 听 | 听 | 听 |
| Fair value of plan assets at beginning of year | 3,100,494 | 2,637,397 | 听 | 听 |
| Actual return on plan assets | 199,235 | 45,312 | 听 | 听 |
| Contributions by employer | 听 | 543,139 | 听 | 听 |
| Benefits paid | (142,460) | (125,354) | 听 | 听 |
| Fair value of plan assets at end of year | 3,157,269 | 3,100,494 | 2,637,397 | 听 |
| Unfunded status at end of year | $ (873,579) | $ (539,971) | 听 | 听 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change in benefit obligation or plan asset value from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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