Note 5 - Employee Benefit Plans - Fair Values of Plan Assets by Major Asset Category (Details) - USD ($) $ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Plan assets by category | $ 5,356 | $ 4,937 | $ 4,551 |
Fair Value, Inputs, Level 1 [Member] | |||
Plan assets by category | 5,356 | 4,937 | |
Money Market Funds [Member] | |||
Plan assets by category | 165 | 1,048 | |
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] | |||
Plan assets by category | 165 | 1,048 | |
Equity Securities [Member] | |||
Plan assets by category | 670 | 445 | |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] | |||
Plan assets by category | 670 | 445 | |
Equity Funds [Member] | |||
Plan assets by category | 2,468 | 1,684 | |
Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member] | |||
Plan assets by category | 2,468 | 1,684 | |
Fixed Income Funds [Member] | |||
Plan assets by category | 2,053 | 1,760 | |
Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member] | |||
Plan assets by category | $ 2,053 | $ 1,760 |
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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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