Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Common stock, beginning balance (in shares) at Dec. 31, 2020		16,452,000
Stockholders' equity balance, beginning of the period at Dec. 31, 2020	$ (354,651)	$ 249	$ 257,625	$ (55,553)	$ (55)	$ (556,917)
Treasury stock, beginning of period (in shares) at Dec. 31, 2020						8,430,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,076			78,076
Other comprehensive gain (loss)	(4)				(4)
Reissuance of treasure stock (in shares)		647,000				647,000
Reissuance of treasury stock	25,016	$ 1	(1,120)			$ 26,135
Net use of shares for stock plans (in shares)		140,000
Repurchase of restricted shares for taxes (in shares)		(19,000)
Repurchase of restricted shares for taxes	(1,543)		(1,543)
Stock-based compensation	8,572		8,572
Tax payments for share settlement of restricted stock units	(9,783)		(9,783)
Common stock, ending balance (in shares) at Sep. 30, 2021		17,220,000
Stockholders' equity balance, ending of the period at Sep. 30, 2021	(254,317)	$ 250	253,751	22,523	(59)	$ (530,782)
Treasury stock, end of period (in shares) at Sep. 30, 2021						7,783,000
Common stock, beginning balance (in shares) at Jun. 30, 2021		17,178,000
Stockholders' equity balance, beginning of the period at Jun. 30, 2021	(282,751)	$ 250	250,509	(588)	(57)	$ (532,865)
Treasury stock, beginning of period (in shares) at Jun. 30, 2021						7,833,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,111			23,111
Other comprehensive gain (loss)	(2)				(2)
Reissuance of treasure stock (in shares)		50,000				50,000
Reissuance of treasury stock	2,505		422			$ 2,083
Net use of shares for stock plans (in shares)		(6,000)
Repurchase of restricted shares for taxes (in shares)		(2,000)
Repurchase of restricted shares for taxes	(140)		(140)
Stock-based compensation	2,960		2,960
Common stock, ending balance (in shares) at Sep. 30, 2021		17,220,000
Stockholders' equity balance, ending of the period at Sep. 30, 2021	$ (254,317)	$ 250	253,751	22,523	(59)	$ (530,782)
Treasury stock, end of period (in shares) at Sep. 30, 2021						7,783,000
Common stock, beginning balance (in shares) at Dec. 31, 2021	17,163,946	17,164,000
Stockholders' equity balance, beginning of the period at Dec. 31, 2021	$ (242,807)	$ 250	256,189	35,415	(59)	$ (534,602)
Treasury stock, beginning of period (in shares) at Dec. 31, 2021						7,828,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	69,760			69,760
Other comprehensive gain (loss)	$ (9)				(9)
Purchase of common stock (in shares)	1,642,097	1,642,000				1,642,000
Purchase of common stock	$ (113,573)					$ (113,573)
Reissuance of treasure stock (in shares)	186,035	186,000				186,000
Reissuance of treasury stock	$ 241		(8,471)			$ 8,712
Net use of shares for stock plans (in shares)		9,000
Repurchase of restricted shares for taxes (in shares)		(35,000)
Repurchase of restricted shares for taxes	(2,601)		(2,601)
Stock-based compensation	12,128		12,128
Tax payments for share settlement of restricted stock units	$ (955)		(955)
Common stock, ending balance (in shares) at Sep. 30, 2022	15,682,061	15,682,000
Stockholders' equity balance, ending of the period at Sep. 30, 2022	$ (301,594)	$ 250	256,508	81,179	(68)	$ (639,463)
Treasury stock, end of period (in shares) at Sep. 30, 2022						9,284,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends on common stock	(23,778)		218	(23,996)
Common stock, beginning balance (in shares) at Jun. 30, 2022		15,823,000
Stockholders' equity balance, beginning of the period at Jun. 30, 2022	(308,656)	$ 250	253,213	68,265	(63)	$ (630,321)
Treasury stock, beginning of period (in shares) at Jun. 30, 2022						9,151,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,948			20,948
Other comprehensive gain (loss)	$ (5)				(5)
Purchase of common stock (in shares)	140,997	141,000				141,000
Purchase of common stock	$ (9,520)					$ (9,520)
Reissuance of treasure stock (in shares)		8,000				8,000
Reissuance of treasury stock	0		(378)			$ 378
Net use of shares for stock plans (in shares)		(5,000)
Repurchase of restricted shares for taxes (in shares)		(3,000)
Repurchase of restricted shares for taxes	(248)		(248)
Stock-based compensation	3,801		3,801
Tax payments for share settlement of restricted stock units	$ (2)		(2)
Common stock, ending balance (in shares) at Sep. 30, 2022	15,682,061	15,682,000
Stockholders' equity balance, ending of the period at Sep. 30, 2022	$ (301,594)	$ 250	256,508	81,179	$ (68)	$ (639,463)
Treasury stock, end of period (in shares) at Sep. 30, 2022						9,284,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends on common stock	$ (7,912)		$ 122	$ (8,034)