Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands	Total	Common Stock	Additional paid in capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balance at Dec. 31, 2009	$ 76,803	$ 163	$ 49,861	$ 259	$ 26,520
Beginning Balance, Shares at Dec. 31, 2009		16,268
Net income	6,416			6,416
Stock option expense	152		152
Shares issued for options	753	1	752
Shares issued for options, Shares		103
Actuarial loss recognized in change of projected benefit obligation (net of tax $0)	(392)				(392)
Restricted stock compensation expense	1,101	3	1,098
Restricted stock compensation expense, shares		249
Foreign currency translation gain (loss)	(6,726)				(6,726)
Ending Balance at Dec. 31, 2010	78,107	167	51,863	6,675	19,402
Ending Balance, Shares at Dec. 31, 2010		16,620
Net income	20,937			20,937
Stock option expense	480		480
Shares issued for options	2,382	2	2,380
Shares issued for options, Shares		254
Restricted stock compensation expense	348		348
Restricted stock compensation expense, shares		75
Foreign currency translation gain (loss)	(2,578)				(2,578)
Ending Balance at Dec. 31, 2011	99,676	169	55,071	27,612	16,824
Ending Balance, Shares at Dec. 31, 2011		16,949
Net income	24,268			24,268
Stock option expense	1,093		1,093
Shares issued for options	22		22
Shares issued for options, Shares	17	17
Restricted stock compensation expense	695	1	694
Restricted stock compensation expense, shares		78
Foreign currency translation gain (loss)	2,806				2,806
Ending Balance at Dec. 31, 2012	$ 128,560	$ 170	$ 56,880	$ 51,880	$ 19,630
Ending Balance, Shares at Dec. 31, 2012		17,044