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Note 13 - Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Balance | $ 513,853 | $ 473,067
Total other comprehensive income, net of tax | 1,228 | 6,873
Balance | 525,402 | 487,779
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |
Balance | (3,859) | (521)
Other comprehensive income before reclassifications, net of tax | 1,148 | 6,770
Amounts reclassified from accumulated other comprehensive income, net of tax |  |
Total other comprehensive income, net of tax | 1,148 | 6,770
Balance | (2,711) | 6,249
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |
Balance | (4,503) | (5,041)
Other comprehensive income before reclassifications, net of tax |  |
Amounts reclassified from accumulated other comprehensive income, net of tax | 80 | 103
Total other comprehensive income, net of tax | 80 | 103
Balance | (4,423) | (4,938)
AOCI Attributable to Parent [Member] |  |
Balance | (8,362) | (5,562)
Other comprehensive income before reclassifications, net of tax | 1,148 | 6,770
Amounts reclassified from accumulated other comprehensive income, net of tax | 80 | 103
Total other comprehensive income, net of tax | 1,228 | 6,873
Balance | $ (7,134) | $ 1,311

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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 + Details
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