Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Previously Reported	Revision of Prior Period, Accounting Standards Update, Adjustment	Common stock	Common stock Previously Reported	Other paid-in capital	Other paid-in capital Previously Reported	Retained earnings	Retained earnings Previously Reported	Retained earnings Revision of Prior Period, Accounting Standards Update, Adjustment	Total accumulated other comprehensive loss	Total accumulated other comprehensive loss Previously Reported	Total accumulated other comprehensive loss Revision of Prior Period, Accounting Standards Update, Adjustment	Treasury stock	Treasury stock Previously Reported
Balance (in shares) at Dec. 31, 2017				195,843,297
Treasury stock (in shares) at Dec. 31, 2017														(538,921)
Balance at Dec. 31, 2017	$ 2,428,073	$ 2,429,043		$ 195,843	$ 195,843	$ 1,233,412	$ 1,233,412	$ 1,039,778	$ 1,040,748		$ (37,334)	$ (37,334)		$ (3,626)	$ (3,626)
Balance (Accounting Standards Update 2014-09) at Dec. 31, 2017			$ (970)							$ (970)
Net income	272,318							272,318
Other comprehensive income (loss)	6,951										6,951
Dividends declared on common stock	(156,453)							(156,453)
Stock-based compensation	5,060					5,060
Repurchase of common stock (in shares)														(182,424)
Repurchase of common stock	(5,020)													$ (5,020)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings						(7,350)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings (in shares)														182,424
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings														$ 5,020
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	(2,330)
Issuance of common stock (in shares)				721,610
Issuance of common stock	18,176			$ 722		17,454
Balance at Dec. 31, 2018	2,566,775		$ 0	$ 196,565		1,248,576		1,163,602		$ 7,959	(38,342)		$ (7,959)	$ (3,626)
Balance (in shares) at Dec. 31, 2018				196,564,907
Treasury stock (in shares) at Dec. 31, 2018														(538,921)
Net income	335,453							335,453
Other comprehensive income (loss)	(3,760)										(3,760)
Dividends declared on common stock	(162,408)							(162,408)
Stock-based compensation	7,353					7,353
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings						(3,261)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	(3,015)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings (in shares)				246,214
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings				$ 246
Issuance of common stock (in shares)				4,111,669
Issuance of common stock	106,848			$ 4,112		102,736
Balance at Dec. 31, 2019	$ 2,847,246			$ 200,923		1,355,404		1,336,647			(42,102)			$ (3,626)
Balance (in shares) at Dec. 31, 2019	200,922,790			200,922,790
Treasury stock (in shares) at Dec. 31, 2019														(538,921)
Net income	$ 390,205							390,205
Other comprehensive income (loss)	(5,976)										(5,976)
Dividends declared on common stock	(168,489)							(168,489)
Stock-based compensation	13,096					13,096
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings						(388)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	(362)
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings (in shares)				26,406
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings				$ 26
Issuance of common stock (in shares)				112,002
Issuance of common stock	3,385			$ 112		3,273
Balance at Dec. 31, 2020	$ 3,079,105			$ 201,061		$ 1,371,385		$ 1,558,363			$ (48,078)			$ (3,626)
Balance (in shares) at Dec. 31, 2020	201,061,198			201,061,198
Treasury stock (in shares) at Dec. 31, 2020														(538,921)