Condensed Consolidated Statement of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common shares	Additional paid-in capital	Common shares subscribed, unissued	Retained earnings	Accumulated other comprehensive income (loss), net of tax	Common shares held in treasury	Common shares subscription receivable
Stockholders' equity	$ 129,800	$ 38,550	$ 162,828	$ 23,864	$ 293,993	$ (5,588)	$ 363,502	$ 20,345
Net income	38,039				38,039
Change in 401KSOP and ESOP related shares	(10,508)	533	8,911		(19,952)
Shares sold to employees	20,561		9,205				11,356
Options exercised	1,660		(1,650)				3,310
Subscription shares	1,457		442	(371)			383	1,003
Stock-based compensation	$ 2,303		2,303
Dividends, per share	$ 0.040
Dividends	$ (1,732)				(1,732)
Other Comprehensive Income (Loss), Net of Tax	455					455
Shares purchased	(36,628)						(36,628)
Stockholders' equity	128,238	38,396	162,170	23,864	299,119	(5,616)	(369,721)	(19,974)
Net income	32,043				32,043
Change in 401KSOP and ESOP related shares	(7,768)	687	11,504		(19,959)
Shares sold to employees	17,533		7,589				9,944
Options exercised	2,077		(445)				2,522
Subscription shares	1,086		442	(371)			383	632
Stock-based compensation	$ 779		779
Dividends, per share	$ 0.020
Dividends	$ (855)				(855)
Other Comprehensive Income (Loss), Net of Tax	483					483
Shares purchased	(28,209)						(28,209)
Stockholders' equity	145,407	39,083	182,039	23,493	310,348	(5,133)	385,081	19,342
Stockholders' equity	152,474	39,308	197,962	22,832	330,436	(4,785)	416,616	16,663
Net income	27,445				27,445
Change in 401KSOP and ESOP related shares	(866)	(551)	4,673		(4,988)
Shares sold to employees	17,931		9,601				8,330
Options exercised	8,693		296				8,397
Subscription shares	630		143	(791)			167	1,111
Stock-based compensation	$ (1,869)		(1,869)
Dividends, per share	$ 0.050
Dividends	$ (2,114)				(2,114)
Other Comprehensive Income (Loss), Net of Tax	(991)					(991)
Shares purchased	(40,077)						(40,077)
Stockholders' equity	142,555	39,161	195,482	22,796	327,091	(5,502)	(420,097)	(16,376)
Net income	29,720
Change in 401KSOP and ESOP related shares	2,371	(404)	7,763		(4,988)
Shares sold to employees	14,266		7,504				6,762
Options exercised	5,376		445				4,931
Subscription shares	343		125	(755)			149	824
Stock-based compensation	$ (513)		(513)
Dividends, per share	$ 0.025
Dividends	$ (1,044)				(1,044)
Other Comprehensive Income (Loss), Net of Tax	(274)					(274)
Shares purchased	(31,544)						(31,544)
Stockholders' equity	$ 161,256	$ 38,757	$ 210,806	$ 22,041	$ 350,779	$ (5,776)	$ 439,799	$ 15,552