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Note 14 - Other Comprehensive Income (Loss) (Details) - Comprehensive Income (Loss) Components Income Tax Effect - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Comprehensive Income (Loss) Components Income Tax Effect [Abstract] |  |  |
Balance | $ 625 | $ 619 | $ 602
Balance | 10,417 | 5,764 | 7,276
Balance | 11,042 | 6,383 | 7,878
Change | 6 | 6 | 17
Change | 213 | 4,653 | (1,512)
Change | 219 | 4,659 | (1,495)
Balance | 631 | 625 | 619
Balance | 10,630 | 10,417 | 5,764
Balance | $ 11,261 | $ 11,042 | $ 6,383

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- Definition Tax effect of plan amendments that occurred that has not been recognized in net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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