Condensed Consolidated Statements of Changes in Stockholders' Equity Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Deferred Compensation, Share-based Payments [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock, Common [Member]
Stockholders' Equity Attributable to Parent	$ 475,864	$ 70,876	$ 293,937	$ 131,392	$ 2,761	$ (6,473)	$ (16,629)
Net income	13,316	0	0	13,316	0	0	0
Other Comprehensive Income (Loss), Net of Tax	7,628	0	0	0	0	7,628	0
Stock Issued During Period, Value, Deferred Compensation Plan	194	23	171	0	0	0	0
Stock Issued During Period, Value, Restricted Stock Award, Gross	864	104	760	0	0	0	0
Increase (Decrease) in Deferred Compensation	0	0	0	0	1	0	1
Stock Issued During Period, Value, Employee Stock Purchase Plan	24	3	21	0	0	0	0
APIC, Share-based Payment Arrangement, Recognition and Exercise	(866)	0	(52)	0	(814)	0	0
Adjustments to Deferred Compensation Equity, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	128	0	0	0	128	0	0
Stockholders' Equity Attributable to Parent	497,152	71,006	294,837	144,708	2,074	1,155	(16,628)
Stockholders' Equity Attributable to Parent	526,609	71,152	295,925	166,667	2,760	8,360	(18,255)
Net income	9,999	0	0	9,999	0	0	0
Other Comprehensive Income (Loss), Net of Tax	(3,151)	0	0	0	0	(3,151)	0
Stock Issued During Period, Value, Restricted Stock Award, Gross	868	101	767	0	0	0	0
Increase (Decrease) in Deferred Compensation	0	0	0	0	(5)	0	(5)
Stock Issued During Period, Value, Employee Stock Purchase Plan	86	15	71	0	0	0
Adjustments to Additional Paid in Capital, Income Tax Benefit from Deferred Compensation	22	0	22	0	0	0	0
APIC, Share-based Payment Arrangement, Recognition and Exercise	584	0	584	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	(516)	0	(516)	0	0	0	0
Adjustments to Deferred Compensation Equity, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	(733)	0	0	0	(733)	0	0
Stockholders' Equity Attributable to Parent	$ 533,051	$ 71,268	$ 296,853	$ 175,949	$ 2,022	$ 5,209	$ (18,250)