CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2013	$ 284,619	$ 783	$ 205,712	$ 77,038	$ 12,177	$ (11,091)
Beginning Balance (in shares) at Dec. 31, 2013		78,315				(967)
Stock Issued During Period, Value, Stock Options Exercised	1,591	0	(487)	0	0	2,078
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period						181
Equity issuance costs	5		5
Compensatory stock and stock options (in shares)		0
Compensatory stock and stock options	1,163		1,163
Cash dividends	(774)			(774)
Equity adjustment from foreign currency translation	173				173
Net income	55,312			55,312
Ending Balance at Mar. 31, 2014	$ 342,089	$ 783	$ 206,393	$ 131,576	$ 12,350	$ (9,013)
Ending Balance (in shares) at Mar. 31, 2014		78,315				(786)