Note 9 - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Interest expense, net		$ (113)
Tax benefit		40
Amounts reclassified from accumulated other comprehensive loss		(73)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Cost of goods sold, selling, general, and administrative expenses	$ (289)	(325)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Selling, general and administrative expenses	(13)	(13)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Tax benefit	100	108
Amounts reclassified from accumulated other comprehensive loss	(202)	(230)
Total before tax	(302)	(338)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Amounts reclassified from accumulated other comprehensive loss	(202)	(303)
Interest expense, net	55	(476)
Tax benefit	(6,552)	(3,767)
Amounts reclassified from accumulated other comprehensive loss	14,582	7,993
Selling, general and administrative expenses	14,045	13,751
Total before tax	$ 21,397	$ 12,135