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Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) as Reported in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Balance	$ 302,888
Balance	319,009
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(8,842)	$ (9,057)
Reclassification adjustments
Current period credit	3,119	1,487
Income tax expense
Balance	(5,723)	(7,570)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(11,623)	(13,358)
Reclassification adjustments	4,720	1,053
Current period credit	54
Income tax expense	(1,746)	(343)
Balance	(8,595)	(12,648)
AOCI Attributable to Parent [Member]
Balance	(20,465)	(22,415)
Reclassification adjustments	4,720	1,053
Current period credit	3,173	1,487
Income tax expense	(1,746)	(343)
Balance	$ (14,318)	$ (20,218)

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Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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-Publisher FASB
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