CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Total
Balance at Dec. 31, 2022	$ 5		$ 3,471,044	$ 3,471,049
Balance (in shares) at Dec. 31, 2022	49,988
Changes in stockholders' equity
Net income			88,628	88,628
Stock based compensation		$ 11,530		11,530
Stock based compensation (in shares)	1,069
Issuance of common stock in settlement of directors' fees		102		102
Issuance of common stock in settlement of director fees (in shares)	2
Common stock dividends			(20,974)	(20,974)
Repurchase of common stock		(11,632)	(59,943)	(71,575)
Repurchase of common stock (in shares)	(1,201)
Balance at Jun. 30, 2023	$ 5		3,478,755	3,478,760
Balance (in shares) at Jun. 30, 2023	49,858
Balance at Mar. 31, 2023	$ 5		3,452,185	3,452,190
Balance (in shares) at Mar. 31, 2023	50,097
Changes in stockholders' equity
Net income			58,250	58,250
Stock based compensation		4,680		4,680
Stock based compensation (in shares)	193
Issuance of common stock in settlement of directors' fees		51		51
Issuance of common stock in settlement of director fees (in shares)	1
Common stock dividends			(10,197)	(10,197)
Repurchase of common stock		(4,731)	(21,483)	(26,214)
Repurchase of common stock (in shares)	(433)
Balance at Jun. 30, 2023	$ 5		3,478,755	3,478,760
Balance (in shares) at Jun. 30, 2023	49,858
Balance at Dec. 31, 2023	$ 5	24,287	3,514,311	3,538,603
Balance (in shares) at Dec. 31, 2023	50,179
Changes in stockholders' equity
Net income			137,566	137,566
Stock based compensation		5,624		5,624
Stock based compensation (in shares)	836
Issuance of common stock in settlement of directors' fees		142		142
Issuance of common stock in settlement of director fees (in shares)	2
Common stock dividends			(20,817)	(20,817)
Balance at Jun. 30, 2024	$ 5	30,053	3,631,060	3,661,118
Balance (in shares) at Jun. 30, 2024	51,017
Balance at Mar. 31, 2024	$ 5	27,179	3,543,199	3,570,383
Balance (in shares) at Mar. 31, 2024	50,908
Changes in stockholders' equity
Net income			98,258	98,258
Stock based compensation		2,816		2,816
Stock based compensation (in shares)	108
Issuance of common stock in settlement of directors' fees		58		58
Issuance of common stock in settlement of director fees (in shares)	1
Common stock dividends	$ 0	0	(10,397)	(10,397)
Balance at Jun. 30, 2024	$ 5	$ 30,053	$ 3,631,060	$ 3,661,118
Balance (in shares) at Jun. 30, 2024	51,017