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Note 7 - Defined Benefit Plan | 3 Months Ended
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Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | Note 7: Defined Benefit Plan Components of Net Periodic Benefit Cost
|  | Pension Benefits Three Months Ended March 31, |
|  | 2014 |  |  | 2013 |
Service cost |  | $ | 131 |  |  | $ | 149 |
Interest cost |  |  | 166 |  |  |  | 154 |
Expected return on plan assets |  |  | (278 | ) |  |  | (246 | )
Amortization of prior service cost |  |  | (27 | ) |  |  | (25 | )
Recognized net actuarial loss |  |  | 65 |  |  |  | 133 |
Net periodic benefit cost |  | $ | 57 |  |  | $ | 165 |
2014 Plan Year Employer Contribution Without considering the prefunding balance, the Company’s minimum required contribution to the National Bankshares, Inc. Retirement Income Plan (the “Plan”) is $396. Considering the prefunding balance, the 2014 minimum required contribution is $0. The Company elected to contribute $109 to the Plan during the three months ended March 31, 2014, for the plan year 2013.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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