Consolidated Statement of Shareholders Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Common Stock Held In Trust [Member]	Deferred Compensation Obligation [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Shares, Outstanding		28,958,000
Stockholders' Equity Attributable to Parent		$ 9,653	$ 130,570	$ 228,841	$ (791)	$ 791	$ (12,960)
Net earnings	$ 22,892			22,892
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	99						99
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(62)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent						0	2,567
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		300,000
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			2,158
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		26,000
Stock Issued During Period, Value, Stock Options Exercised		$ 9	222
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		$ 101	(59)		(5)	5
Stock Repurchased and Retired During Period, Shares		(125,000)
Stock Repurchased and Retired During Period, Value		$ (42)	(116)	(3,822)
Dividends, Common Stock, Cash				(5,976)
Stock Redeemed or Called During Period, Shares		(203,000)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			2,582
Stock Redeemed or Called During Period, Value		$ (68)	(965)	(5,861)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments							(62)
Shares, Outstanding		28,956,000
Stockholders' Equity Attributable to Parent		$ 9,653	134,392	236,074	(796)	796	(10,356)
Shares, Outstanding		29,050,000
Stockholders' Equity Attributable to Parent	382,476	$ 9,683	138,575	256,538	(801)	801	(22,320)
Net earnings	26,886			26,886
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(63)						(63)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent						0	(5,151)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		101,000
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			4,858
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(191,942)	177,000
Stock Issued During Period, Value, Stock Options Exercised		$ 59	1,322
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		$ 34	(67)		(18)	18
Stock Repurchased and Retired During Period, Shares		(88,000)
Stock Repurchased and Retired During Period, Value		$ (29)	(438)	(4,228)
Dividends, Common Stock, Cash				(6,431)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			2,414
Shares, Outstanding		29,240,000
Stockholders' Equity Attributable to Parent	$ 401,642	$ 9,747	$ 146,664	$ 272,765	$ (819)	$ 819	$ (27,534)