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 Income (Loss)
Beginning Balance at Dec. 31, 2013	$ 232,094	$ 232,067	$ (9,582)	$ 14,812	$ (5,203)
Beginning Balance (in shares) at Dec. 31, 2013	34,929,334	34,929,000
Exercise of Common Stock options for cash	3,406	4,694	(1,288)
Exercise of Common Stock options for cash (in shares)		440,000
Tax benefit from exercises of Common Stock options	4,155		4,155
Stock option compensation	895		895
Common Stock issued to Board of Directors and employees	1,330	1,330
Common Stock issued to Board of Directors and employees (in shares)		82,000
Interest rate hedge, net	39				39
Foreign currency hedge, net	160				160
Currency translation, net	(2,501)				(2,501)
Net income	33,002			33,002
Ending Balance at Jun. 30, 2014	$ 272,580	$ 238,091	$ (5,820)	$ 47,814	$ (7,505)
Ending Balance (in shares) at Jun. 30, 2014	35,451,435	35,451,000