Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2012	$ 128,560	$ 170	$ 56,880	$ 51,880	$ 19,630
Beginning Balance, Shares at Dec. 31, 2012		17,044
Net income	12,693			12,693
Dividends declared	(2,073)			(2,073)
Shares issued for option exercises	1,948	2	1,946
Shares issued for option exercises, Shares	283	283
Stock option expense	1,060		1,060
Restricted stock expense	606	2	604
Restricted stock expense, Shares		90
Foreign currency translation loss	2,059				2,059
Ending Balance at Sep. 30, 2013	$ 144,853	$ 174	$ 60,490	$ 62,500	$ 21,689
Ending Balance, Shares at Sep. 30, 2013		17,417