PARENT COMPANY ONLY FINANCIAL INFORMATION - Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Unrealized (gains) losses recognized on equity securities, net	$ (4,516)	$ (931)	$ 2,171
Stock-based compensation	17,120	7,726	6,595
(Increase) decrease in other assets	(10,319)	19,752	(17,888)
Increase (decrease) in other liabilities	(27,199)	(8,517)	12,365
Net cash provided by operating activities	192,571	178,267	173,390
Cash flows provided by (used in) investing activities
Purchases of premises and equipment	(19,618)	(6,430)	(9,533)
Net cash provided by investing activities	1,097,564	657,903	550,987
Cash flows provided by (used in) financing activities
Cash paid for withholding taxes on stock-based payments	(5,282)	(1,755)	(1,093)
Cash dividends paid	(90,989)	(54,169)	(53,076)
Proceeds from issuance of treasury stock for the 2021 ESPP	1,845	0	0
Purchase of treasury stock	(69,859)	0	(4,482)
Issuance of preferred stock, net of stock issuance costs	207,447	0	0
Common stock issuance costs	(920)	(141)	0
Net cash used in financing activities	(1,693,742)	(858,092)	(231,960)
Net increase (decrease) in cash and cash equivalents	(403,607)	(21,922)	492,417
Cash and cash equivalents, beginning of period	697,659	719,581	227,164
Cash and cash equivalents, ending of period	294,052	697,659	719,581
Parent Company
Cash flows provided by (used in) operating activities
Net income	135,262	113,691	122,565
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,029	1,163	1,038
Distributions more (less) than net income of subsidiaries	(12,762)	(38,625)	(53,487)
Unrealized (gains) losses recognized on equity securities, net	(4,467)	(931)	2,171
Stock-based compensation	17,120	7,726	6,595
(Increase) decrease in other assets	(157)	(8,848)	6,253
Increase (decrease) in other liabilities	(6,166)	365	(7,687)
Net cash provided by operating activities	129,859	74,541	77,448
Cash flows provided by (used in) investing activities
Sales (purchases) of equity securities, net	0	995	0
Net cash received in (paid for) acquisitions	11,832	(14,623)	0
Purchases of premises and equipment	(1,201)	(9)	0
Repayments of investments in subsidiaries	0	0	1,480
Net cash provided by investing activities	10,631	(13,637)	1,480
Cash flows provided by (used in) financing activities
Cash paid for withholding taxes on stock-based payments	(5,282)	(1,755)	(1,093)
Cash dividends paid	(90,989)	(54,169)	(53,076)
Repayments of borrowings	(129,000)	(31,450)	(12,000)
Proceeds from the exercise of stock options and warrants	(452)	(3)	9
Proceeds from issuance of treasury stock for the 2021 ESPP	1,845	0	0
Purchase of treasury stock	(69,859)	0	(4,482)
Issuance of preferred stock, net of stock issuance costs	207,447	0	0
Common stock issuance costs	(920)	(141)	0
Net cash used in financing activities	(87,210)	(87,518)	(70,642)
Net increase (decrease) in cash and cash equivalents	53,280	(26,614)	8,286
Cash and cash equivalents, beginning of period	73,484	100,098	91,812
Cash and cash equivalents, ending of period	$ 126,764	$ 73,484	$ 100,098