Consolidated Condensed Statement of Changes In Shareholders' Equity - 6 months ended Jun. 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	$ 4,122	$ 5,484	(1,362)
Exercise of Common Stock options for cash (in shares)		272,000
Tax benefit from exercises of Common Stock options	1,462		1,462
Cancelation of restricted stock	(467)	$ (467)
Cancelation of restricted stock (in shares)		(11,000)
Stock option compensation	1,594		1,594
Common Stock issued to Board of Directors and employees	1,389	$ 1,389
Common Stock issued to Board of Directors and employees (in shares)		98,000
Currency translation, net	(14,170)				(14,170)
Commodity hedge, net	(48)				(48)
Foreign currency hedge, net	(567)				(567)
Net income	39,314			39,314
Ending Balance at Jun. 30, 2015	$ 326,848	$ 249,661	$ (6,530)	$ 124,245	$ (40,528)
Ending Balance (in shares) at Jun. 30, 2015	36,055,652	36,056,000