Note 9 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning balance	$ (25,168)	$ (23,015)	$ (25,880)	$ (11,410)
Other comprehensive income/(loss) before reclassifications	235	(1,127)	947	(12,732)
Amounts reclassified from accumulated other comprehensive loss
Net current-period other comprehensive income/(loss)	235	(1,127)	947	(12,732)
Ending balance	(24,933)	(24,142)	(24,933)	(24,142)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Beginning balance	(29,165)	(32,917)	(29,569)	(33,378)
Other comprehensive income/(loss) before reclassifications
Amounts reclassified from accumulated other comprehensive loss	202	230	606	691
Net current-period other comprehensive income/(loss)	202	230	606	691
Ending balance	(28,963)	(32,687)	(28,963)	(32,687)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Beginning balance		(70)		(193)
Other comprehensive income/(loss) before reclassifications				(23)
Amounts reclassified from accumulated other comprehensive loss		70		216
Net current-period other comprehensive income/(loss)		70		193
Ending balance
Beginning balance	(54,333)	(56,002)	(55,449)	(44,981)
Other comprehensive income/(loss) before reclassifications	235	(1,127)	947	(12,755)
Amounts reclassified from accumulated other comprehensive loss	202	300	606	907
Net current-period other comprehensive income/(loss)	437	(827)	1,553	(11,848)
Ending balance	$ (53,896)	$ (56,829)	$ (53,896)	$ (56,829)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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