Parent Company Information - Components of Condensed Balance Sheets The Parent Company (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets:
Cash and due from banks	$ 264,118	$ 137,385
Intercompany debt securities		150,000
Other assets	1,618,175	531,469
Total assets	71,277,521	34,915,599
Liabilities and stockholders’ equity:
Total liabilities	63,221,335	31,477,274
Total liabilities and stockholders' equity	71,277,521	34,915,599
Parent Company
Assets:
Cash and due from banks	305,331	316,193
Intercompany debt securities	150,000
Investment in subsidiaries	8,631,202	3,526,782
Alternative investments	46,349	20,163
Other assets	13,358	3,953
Total assets	9,146,240	4,017,091
Liabilities and stockholders’ equity:
Senior notes	480,878	485,611
Subordinated notes	514,930	0
Junior subordinated debt	77,320	77,320
Accrued interest payable	7,457	5,861
Due to subsidiaries	3,858	488
Other liabilities	5,611	9,486
Total liabilities	1,090,054	578,766
Stockholders’ equity	8,056,186	3,438,325
Total liabilities and stockholders' equity	$ 9,146,240	$ 4,017,091