Condensed Parent Company Financial Statements - Schedule of Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 201,557	$ 64,673
Short-term investments	1,840,188	478,997
Total cash and cash equivalents	2,041,745	543,670
Restricted equity securities	87,438	83,155
Premises and equipment, net	162,474	86,781
Deferred tax asset	149,487	56,620
Goodwill	351,613	241,222	$ 241,222
Other assets	352,816	198,182
Total assets	23,220,372	11,905,326
LIABILITIES AND STOCKHOLDERS' EQUITY
Borrowed funds	788,360	1,519,846
Total liabilities	20,724,311	10,683,387
Stockholders' Equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; 89,576,403 shares issued and 96,998,075 shares issued, respectively	896	970
Additional paid-in capital	2,171,885	902,584
Retained earnings	485,862	458,943
Accumulated other comprehensive loss	(20,002)	(52,882)
Treasury stock, at cost; 5,545,511 shares and 7,019,384 shares, respectively	(142,580)	(87,676)
Total stockholders' equity	2,496,061	1,221,939	1,198,644	$ 992,125
Total liabilities and stockholders' equity	23,220,372	11,905,326
Parent Company
ASSETS
Cash and due from banks	147,874	31,958
Short-term investments	36	35
Total cash and cash equivalents	147,910	31,993	$ 22,831	$ 161,313
Restricted equity securities	1	152
Premises and equipment, net	1,416	2,391
Deferred tax asset	0	3,525
Investment in subsidiaries, at equity	2,510,193	1,241,520
Goodwill	35,267	35,267
Other assets	22,440	26,318
Total assets	2,717,227	1,341,166
LIABILITIES AND STOCKHOLDERS' EQUITY
Borrowed funds	198,572	84,328
Deferred tax liability	615	0
Accrued expenses and other liabilities	21,979	34,899
Total liabilities	221,166	119,227
Stockholders' Equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; 89,576,403 shares issued and 96,998,075 shares issued, respectively	896	970
Additional paid-in capital	2,171,885	902,584
Retained earnings	485,862	458,943
Accumulated other comprehensive loss	(20,002)	(52,882)
Treasury stock, at cost; 5,545,511 shares and 7,019,384 shares, respectively	(142,580)	(87,676)
Total stockholders' equity	2,496,061	1,221,939
Total liabilities and stockholders' equity	$ 2,717,227	$ 1,341,166