UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net income	$ 32,627	$ 61,211
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	8,249	5,470
Net amortization of debt securities	3,210	3,098
Net amortization of purchase accounting adjustments and deferred loan fees and costs	436	(554)
Origination of loans held for sale	(111,561)	(79,714)
Proceeds from loans held for sale	104,592	115,825
Gain on sale of loans	(3,362)	(2,400)
(Gain) loss on sale of securities	(16)	114
Bank-owned life insurance income, net	(1,076)	(961)
Stock-based compensation, net of tax benefits	1,615	1,740
Depreciation and amortization of premises and equipment	7,092	6,812
Gain on sale and write-downs of other real estate owned, net	(91)	(1)
Amortization of core deposit intangibles	2,760	2,449
Amortization of investments in variable interest entities	7,425	5,633
Net increase in accrued interest receivable	(8,014)	(7,105)
Net decrease (increase) in other assets	2,356	(4,118)
Net (decrease) increase in accrued interest payable	(93,924)	4,637
Net decrease in other liabilities	(9,047)	(13,957)
Net cash (used in) provided by operating activities	(56,729)	98,179
Investing Activities
Sales of available-for-sale debt securities	160,558	29,972
Maturities, prepayments and calls of available-for-sale debt securities	166,314	153,048
Maturities, prepayments and calls of held-to-maturity debt securities	49,821	50,918
Principal collected on loans	755,069	750,400
Loan originations	(843,257)	(1,059,597)
Net additions to premises and equipment	(4,290)	(8,161)
Proceeds from sale of other real estate owned	720	10
Proceeds from redemption of non-marketable equity securities	12,383	559,201
Purchases of non-marketable equity securities	(106,892)	(500,600)
Proceeds from bank-owned life insurance	193	1,787
Investments in variable interest entities	(12,154)	(6,844)
Net cash received from acquisitions	30,903	0
Net cash provided by (used in) investing activities	209,368	(29,866)
Financing Activities
Net decrease in deposits	(118,419)	(458,062)
Net increase in securities sold under agreements to repurchase	53,158	245,407
Net increase (decrease) in short-term Federal Home Loan Bank advances	281,657	(1,465,000)
Proceeds from short-term FRB Bank Term Funding advances	0	2,740,000
Repayments of short-term FRB Bank Term Funding	(2,740,000)	0
Proceeds from long-term Federal Home Loan Bank advances	1,800,000	0
Net increase (decrease) in other borrowed funds	6,967	(1,108)
Cash dividends paid	(314)	(292)
Tax withholding payments for stock-based compensation	(1,370)	(1,719)
Net cash (used in) provided by financing activities	(718,321)	1,059,226
Net (decrease) increase in cash, cash equivalents and restricted cash	(565,682)	1,127,539
Cash, cash equivalents and restricted cash at beginning of period	1,354,342	401,995
Cash, cash equivalents and restricted cash at end of period	788,660	1,529,534
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	206,846	41,059
Cash paid during the period for income taxes	5	0
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Transfer of loans to other real estate owned	16	8
Right-of-use assets obtained in exchange for new lease liabilities	152	276
Equity investments obtained in exchange for delayed equity contributions	7,148	17,113
Dividends declared during the period but not paid	37,514	36,686
Acquisitions
Fair value of common stock shares issued	92,385	0
Cash consideration	771	0
Fair value of assets acquired	777,659	0
Liabilities assumed	$ 684,503	$ 0