Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive (Loss) Income [Member]
Beginning balance, shares at Dec. 31, 2018		109,910,000
Beginning balance at Dec. 31, 2018	$ 286,517	$ 1,099	$ 838,436	$ 805,924	$ (1,347,677)	$ (11,265)
Beginning balance (Accounting Standards Update 2014-09 [Member]) at Dec. 31, 2018	(1,976)			(1,976)
Net earnings	173,546			173,546
Accumulated Other Comprehensive (Loss) Income	595					595
Total other comprehensive (loss) income	595
Purchase of treasury stock	1,292				1,292
Exercise of stock options, shares		550,000
Exercise of stock options	6,799	$ 5	6,794
Vesting of restricted share units, shares		267,000
Vesting of restricted share units	0	$ 2	(2)
Tax effect of stock awards vested and options exercised	(1,734)		(1,734)
Stock-based compensation expense	(6,958)		6,958
Dividends declared	29,619			29,619
Merchants Preferred acquisition, shares		439,000
Merchants Preferred acquisition	19,169	$ 4	19,165
Ending balance, shares at Dec. 31, 2019		111,166,000
Ending balance at Dec. 31, 2019	458,963	$ 1,110	869,617	947,875	(1,348,969)	(10,670)
Ending balance (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2019	(769)
Ending balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019				(769)
Net earnings	208,115			208,115
Accumulated Other Comprehensive (Loss) Income	(726)					(726)
Total other comprehensive (loss) income	$ (726)
Common stock repurchased, shares	1,463,377	(14,000)
Purchase of treasury stock	$ (26,586)				(26,572)
Exercise of stock options, shares		494,000
Exercise of stock options	10,280	$ 5	10,275
Vesting of restricted share units, shares		521,000
Vesting of restricted share units	0	$ 4	(4)
Tax effect of stock awards vested and options exercised	(5,270)		(5,270)
Stock-based compensation expense	12,284		12,284
Dividends declared	(64,211)			(64,211)
Ending balance, shares at Dec. 31, 2020		112,181,000
Ending balance at Dec. 31, 2020	592,080	$ 1,105	886,902	1,091,010	(1,375,541)	(11,396)
Net earnings	134,940			134,940
Accumulated Other Comprehensive (Loss) Income	(975)					(975)
Total other comprehensive (loss) income	(975)
Purchase of treasury stock	$ (390,112)	$ (79)			(390,033)
Exercise of stock options, shares	476,398	477,000
Exercise of stock options	$ 12,054	$ 4	12,050
Vesting of restricted share units, shares		960,000
Vesting of restricted share units	0	$ 8	(8)
Tax effect of stock awards vested and options exercised	(20,903)		(20,903)
Stock-based compensation expense	147,554		147,554
Dividends declared	(82,303)			(82,303)
Merchants Preferred acquisition, shares		10,780,000
Merchants Preferred acquisition	120,941	$ 27	120,914
Ending balance, shares at Dec. 31, 2021		124,398,000
Ending balance at Dec. 31, 2021	$ 513,276	$ 1,065	$ 1,146,509	$ 1,143,647	$ (1,765,574)	$ (12,371)