Parents Company Financial Statements - Schedule of Cash Flows Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net income	$ 119,561	$ 232,177	$ 199,759
Adjustments to reconcile net income to net cash provided by operating activities
Share-based compensation	19,269	16,047	10,507
ESOP expense	7,356	7,129	9,923
Gain on sale of other equity investment	(9,291)	0	0
Net cash provided by operating activities	283,836	261,692	229,942
Investing activities
Contributions to other equity investments	(1,005)	(720)	(788)
Proceeds from sale of other equity investment	9,958	0	0
Net cash acquired in business combination	24,879	0	0
Net cash provided by (used in) investing activities	1,059,397	2,400,265	(1,076,655)
Financing activities
Payments for shares repurchased under share repurchase plans	(27,683)	0	(201,618)
Stock issuance costs	(941)	0	0
Net cash used in financing activities	(1,029,429)	(2,138,386)	(215,574)
Net increase (decrease) in cash, cash equivalents, and restricted cash	313,804	523,571	(1,062,287)
Cash, cash equivalents, and restricted cash at beginning of period	693,076	169,505	1,231,792
Cash, cash equivalents, and restricted cash at end of period	1,006,880	693,076	169,505
Parent
Operating activities
Net income	119,561	232,177	199,759
Adjustments to reconcile net income to net cash provided by operating activities
Equity in undistributed income of subsidiaries	(121,148)	(238,917)	(203,982)
Share-based compensation	19,269	16,513	10,507
ESOP expense	7,356	7,129	9,923
Gain on sale of other equity investment	(9,291)	0	0
Deferred income taxes, net	4,308	6,419	4,792
Other, net	736	(4,115)	(937)
Net cash provided by operating activities	20,791	19,206	20,062
Investing activities
Return of investments in subsidiary	128,000	40,000	240,000
Contributions to other equity investments	(405)	(720)	(788)
Proceeds from sale of other equity investment	9,958	0	0
Net cash acquired in business combination	21,154	0	0
Net cash provided by (used in) investing activities	158,707	39,280	239,212
Financing activities
Payments for shares repurchased under share repurchase plans	(27,683)	0	(201,618)
Dividends declared and paid to common shareholders	(82,541)	(66,671)	(65,886)
Stock issuance costs	(941)	0	0
Net cash used in financing activities	(111,165)	(66,671)	(267,504)
Net increase (decrease) in cash, cash equivalents, and restricted cash	68,333	(8,185)	(8,230)
Cash, cash equivalents, and restricted cash at beginning of period	118,256	126,441	134,671
Cash, cash equivalents, and restricted cash at end of period	$ 186,589	$ 118,256	$ 126,441