Consolidated Condensed Statement of Changes In Shareholders' Equity - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 31, 2014	$ 294,219	$ 243,255	$ (8,224)	$ 84,931	$ (25,743)
Beginning Balance (in shares) at Dec. 31, 2014	35,696,334	35,697,000
Exercise of Common Stock options for cash	$ 6,468	$ 8,554	(2,086)
Exercise of Common Stock options for cash (in shares)		436,000
Tax benefit from exercises of Common Stock options	1,220		1,220
Cancellation of restricted stock	(1,475)	$ (1,475)
Cancelation of restricted stock (in shares)		(30,000)
Stock option compensation	2,400		2,400
Common Stock issued to Board of Directors and employees	2,287	$ 2,287
Common Stock issued to Board of Directors and employees (in shares)		108,000
Currency translation, net	(18,548)				(18,548)
Foreign currency hedge, net	(902)				(902)
Commodity hedge, net	(266)				(266)
Net income	66,979			66,979
Ending Balance at Sep. 30, 2015	$ 352,382	$ 252,621	$ (6,690)	$ 151,910	$ (45,459)
Ending Balance (in shares) at Sep. 30, 2015	36,210,905	36,211,000