Condensed Consolidated Statement of Changes in Equity (USD $) In Thousands, except Share data	Total USD ($)	Common Stock	Treasury Stock USD ($)	Additional Paid in Capital USD ($)	Accumulated Retained Earnings USD ($)	Accumulated Other Comprehensive Income USD ($)
BEGINNING BALANCE at Dec. 31, 2011	$ 164,830		$ (5,017)	$ 79,551	$ 89,980	$ 316
BEGINNING BALANCE (in shares) at Dec. 31, 2011		34,282,244
Exercise of options (in shares)	999,292	999,292
Exercise of options	1,873			1,873
Conversion of restricted stock into common stock		219,125
Shares issued under employee stock purchase plan (in shares)		45,188
Shares issued under employee stock purchase plan	216			216
Repurchase of shares (in shares)		(302,140)
Repurchase of shares	(1,438)		(1,438)
Stock compensation expense	2,623			2,623
Foreign currency translation adjustment	638					638
Tax benefit of stock options exercises	80			80
Dividend payment ($0.05 dividend per share for each respective quarter in 2012)	(5,212)				(5,212)
Net income	6,409				6,409
ENDING BALANCE at Sep. 30, 2012	$ 170,019		$ (6,455)	$ 84,343	$ 91,177	$ 954
ENDING BALANCE (in shares) at Sep. 30, 2012		35,243,709