Consolidated Condensed Statement of Changes In Shareholders' Equity (USD $) In Thousands, except Share data	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	2,026	2,672	(646)
Exercise of Common Stock options for cash (in shares)		123,000
Cancelation of restricted stock	(467)	(467)
Cancelation of restricted stock (in shares)		(11,000)
Stock option compensation	685		685
Common Stock issued to Board of Directors and employees	673	673
Common Stock issued to Board of Directors and employees (in shares)		81,000
Currency translation, net	(19,138)				(19,138)
Commodity hedge, net	76				76
Foreign currency hedge, net	(258)				(258)
Net income	19,820			19,820
Ending Balance at Mar. 31, 2015	$ 297,636	$ 246,133	$ (8,185)	$ 104,751	$ (45,063)
Ending Balance (in shares) at Mar. 31, 2015	35,890,326	35,890,000