Note 8 - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Interest expense, net	$ (108)	$ (118)	$ (333)	$ (348)
Tax benefit	38	41	117	122
Amounts reclassified from accumulated other comprehensive loss	(70)	(77)	(216)	(226)
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	(325)	(200)	(976)	(605)
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)	(39)	(38)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Tax benefit	108	70	324	210
Amounts reclassified from accumulated other comprehensive loss	(230)	(143)	(691)	(433)
Total before tax	(338)	$ (213)	(1,015)	(643)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Amounts reclassified from accumulated other comprehensive loss				(4,400)
Release of currency translation adjustment				(4,400)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Amounts reclassified from accumulated other comprehensive loss	(300)	$ (220)	(907)	(5,059)
Interest expense, net	(517)	(570)	(1,467)	(1,635)
Tax benefit	(5,330)	(2,537)	(18,569)	6,424
Amounts reclassified from accumulated other comprehensive loss	11,747	8,769	39,403	29,418
Selling, general, and administrative expenses	13,989	12,541	41,818	38,734
Total before tax	$ 17,206	$ 11,419	$ 58,263	23,451
Release of currency translation adjustment				$ (4,618)