Operating Segments - Schedule of Company’s Reportable Operating Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Net interest income	$ 186,661	$ 157,712	$ 521,907	$ 463,523
Noninterest income (loss)	(756,187)	17,130	(667,678)	103,613
Total net revenue (loss)	(569,526)	174,842	(145,771)	567,136
Salaries and employee benefits	76,249	69,167	224,935	212,536
Occupancy expense, net	12,106	12,216	36,601	36,338
Furniture and equipment expense	5,275	5,612	16,214	16,376
Deposit insurance	5,175	5,571	15,483	18,388
Other operating expenses	43,227	44,627	131,968	132,788
TOTAL NONINTEREST EXPENSE	142,032	137,193	425,201	416,426
Income (loss) before provision for credit losses and income taxes	(711,558)	37,649	(570,972)	150,710
Provision for credit losses	11,966	12,148	50,708	33,453
Income tax expense (benefit)	(160,732)	761	(146,049)	12,883
NET INCOME (LOSS)	(562,792)	24,740	(475,631)	104,374
Assets	24,208,162	27,269,404	24,208,162	27,269,404	$ 26,876,049
Other
Segment Reporting Information [Line Items]
Net interest income	1,424	202	1,408	332
Noninterest income (loss)	10,067	9,253	29,451	27,509
Total net revenue (loss)	11,491	9,455	30,859	27,841
Salaries and employee benefits	4,394	4,536	13,880	13,755
Occupancy expense, net	507	455	1,467	1,350
Furniture and equipment expense	0	0	0	2
Deposit insurance	0	0	0	0
Other operating expenses	1,651	1,081	4,602	4,375
TOTAL NONINTEREST EXPENSE	6,552	6,072	19,949	19,482
Income (loss) before provision for credit losses and income taxes	4,939	3,383	10,910	8,359
Provision for credit losses	0	0	0	0
Income tax expense (benefit)	3	7	18	55
NET INCOME (LOSS)	4,936	3,376	10,892	8,304
Assets	5,025	6,279	5,025	6,279
Community and Commercial Banking | Community and Commercial Banking
Segment Reporting Information [Line Items]
Net interest income	185,237	157,510	520,499	463,191
Noninterest income (loss)	(766,254)	7,877	(697,129)	76,104
Total net revenue (loss)	(581,017)	165,387	(176,630)	539,295
Salaries and employee benefits	71,855	64,631	211,055	198,781
Occupancy expense, net	11,599	11,761	35,134	34,988
Furniture and equipment expense	5,275	5,612	16,214	16,374
Deposit insurance	5,175	5,571	15,483	18,388
Other operating expenses	41,576	43,546	127,366	128,413
TOTAL NONINTEREST EXPENSE	135,480	131,121	405,252	396,944
Income (loss) before provision for credit losses and income taxes	(716,497)	34,266	(581,882)	142,351
Provision for credit losses	11,966	12,148	50,708	33,453
Income tax expense (benefit)	(160,735)	754	(146,067)	12,828
NET INCOME (LOSS)	(567,728)	21,364	(486,523)	96,070
Assets	$ 24,203,137	$ 27,263,125	$ 24,203,137	$ 27,263,125