Consolidated Statement of Shareholders Equity Statement - USD ($) shares in Thousands, $ 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
Stockholders' Equity Attributable to Parent		$ 9,653	$ 130,570	$ 228,841	$ (791)	$ 791	$ (12,960)
Net earnings	$ 6,102			6,102
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	82						82
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	2,150
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	262
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			1,604
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	17
Stock Issued During Period, Value, Stock Options Exercised		5	159
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		87	(67)		3	(3)
Stock Repurchased and Retired During Period, Shares	(106)
Stock Repurchased and Retired During Period, Value		(35)	(29)	(3,284)
Dividends, Common Stock, Cash				(3,078)
Stock Redeemed or Called During Period, Shares	(28)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			1,250
Stock Redeemed or Called During Period, Value		(9)	(128)	(726)
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments							(62)
Shares, Outstanding	29,103
Stockholders' Equity Attributable to Parent		9,701	133,359	227,855	(788)	788	(10,790)
Shares, Outstanding	29,050
Stockholders' Equity Attributable to Parent	$ 382,476	9,683	138,575	256,538	(801)	801	(22,320)
Net earnings	12,126			12,126
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(64)						(64)
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	(3,011)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	83
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			3,658
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	160
Stock Issued During Period, Value, Stock Options Exercised		53	1,285
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		28	(13)		(9)	9
Stock Repurchased and Retired During Period, Shares	(65)
Stock Repurchased and Retired During Period, Value		(21)	(316)	(3,122)
Dividends, Common Stock, Cash				(3,215)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			1,040
Shares, Outstanding	29,228
Stockholders' Equity Attributable to Parent	$ 390,904	$ 9,743	$ 144,229	$ 262,327	$ (810)	$ 810	$ (25,395)