CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Common stock, issued		103,130,300				31,943,599
Additional paid-in capital			$ 715,475
Retained earnings				$ 997,250
Accumulated other comprehensive (loss) income					$ 1,388
Total stockholders’ equity	$ 407,927	$ 10,313				$ (1,316,499)
Net income	38,066			38,066
Total other comprehensive (loss)	(423)				(423)
Issuance of shares of common stock (in shares)		90,009
Issuance of shares of common stock, amount	3,711	$ 9	3,702
Issuance of restricted stock units and net share settlement related to withholding taxes (in shares)		58,829
Issuance of restricted stock units and net share settlement related to withholding taxes, amount	(3,284)	$ 6	(3,290)
Repurchase of common stock (in shares)						473,376
Repurchase of common stock, amount	50,000					$ 50,000
Stock-based compensation	8,865		8,865
Common stock, issued		103,279,138				32,416,975
Additional paid-in capital			724,752
Retained earnings				1,035,316
Accumulated other comprehensive (loss) income					965
Total stockholders’ equity	$ 404,862	$ 10,328				$ (1,366,499)
Common stock, issued	103,642,292	103,642,292				35,017,726
Additional paid-in capital	$ 739,099		739,099
Retained earnings	1,259,984			1,259,984
Accumulated other comprehensive (loss) income	336				336
Total stockholders’ equity	393,285	$ 10,365				$ (1,616,499)
Net income	46,284			46,284
Total other comprehensive (loss)	(3,102)				(3,102)
Issuance of shares of common stock (in shares)		17,783
Issuance of shares of common stock, amount	935	$ 2	933
Issuance of restricted stock units and net share settlement related to withholding taxes (in shares)		57,451
Issuance of restricted stock units and net share settlement related to withholding taxes, amount	(3,394)	$ 5	(3,399)
Repurchase of common stock (in shares)						382,279
Repurchase of common stock, amount	(50,000)					$ 50,000
Stock-based compensation	$ 9,275		9,275
Common stock, issued	103,717,526	103,717,526				35,400,005
Additional paid-in capital	$ 745,908		$ 745,908
Retained earnings	1,306,268			$ 1,306,268
Accumulated other comprehensive (loss) income	(2,766)				$ (2,766)
Total stockholders’ equity	$ 393,283	$ 10,372				$ (1,666,499)