Note 14 - Other Comprehensive Income (Loss) (Details) - Comprehensive Income (Loss) Components (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Comprehensive Income (Loss) Components [Abstract]
Balance	$ (2,552)	$ 2,059	$ 835
Balance	(23,747)	(25,977)	(24,333)
Balance	(26,299)	(23,918)	(23,498)
Change	1,143	(4,611)	1,224
Change	(6,875)	2,230	(1,644)
Change	(5,732)	(2,381)	(420)
Balance	(1,409)	(2,552)	2,059
Balance	(30,622)	(23,747)	(25,977)
Balance	$ (32,031)	$ (26,299)	$ (23,918)

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Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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- Definition

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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