UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating Activities
Net income	$ 128,390	$ 168,611
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	19,772	11,782
Net amortization of debt securities	9,609	11,745
Net amortization of purchase accounting adjustments and deferred loan fees and costs	(4,980)	(2,879)
Origination of loans held for sale	(483,494)	(332,582)
Proceeds from loans held for sale	551,051	395,216
Gain on sale of loans	(12,929)	(9,974)
(Gain) loss on sale of securities	(30)	202
Bank-owned life insurance income, net	(3,391)	(2,915)
Stock-based compensation, net of tax benefits	4,376	4,577
Depreciation and amortization of premises and equipment	21,557	20,322
Gain on sale and write-downs of other real estate owned, net	(1,147)	(118)
Amortization of core deposit intangibles	9,144	7,304
Amortization of investments in variable interest entities	18,955	15,418
Net increase in accrued interest receivable	(13,982)	(20,939)
Net increase in other assets	(1,632)	(1,764)
Net (decrease) increase in accrued interest payable	(91,936)	87,543
Net increase (decrease) in other liabilities	6,707	(2,038)
Net cash provided by operating activities	156,040	349,511
Investing Activities
Sales of available-for-sale debt securities	237,502	29,972
Maturities, prepayments and calls of available-for-sale debt securities	464,028	479,442
Purchases of available-for-sale debt securities	(21,252)	0
Maturities, prepayments and calls of held-to-maturity debt securities	150,973	159,502
Principal collected on loans	2,816,803	2,167,746
Loan originations	(3,174,085)	(3,133,352)
Net additions to premises and equipment	(27,340)	(36,492)
Proceeds from sale of other real estate owned	2,183	179
Proceeds from redemption of non-marketable equity securities	149,488	628,801
Purchases of non-marketable equity securities	(231,075)	(558,117)
Proceeds from bank-owned life insurance	193	1,787
Investments in variable interest entities	(37,798)	(22,342)
Net cash received from acquisitions	107,684	0
Net cash provided by (used in) investing activities	437,304	(282,874)
Financing Activities
Net decrease in deposits	(227,255)	(210,838)
Net increase in securities sold under agreements to repurchase	340,346	553,780
Net decrease in short-term Federal Home Loan Bank advances	(58,500)	(1,800,000)
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	2,180	(4,196)
Cash dividends paid	(75,166)	(73,485)
Tax withholding payments for stock-based compensation	(1,458)	(1,799)
Net cash (used in) provided by financing activities	(959,853)	1,203,462
Net (decrease) increase in cash, cash equivalents and restricted cash	(366,509)	1,270,099
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	987,833	1,672,094
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	421,560	131,390
Cash paid during the period for income taxes	14,012	17,841
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Sale and refinancing of other real estate owned	6	23
Transfer of loans to other real estate owned	171	100
Right-of-use assets obtained in exchange for new lease liabilities	339	1,096
Equity investments obtained in exchange for delayed equity contributions	15,148	34,712
Dividends declared during the period but not paid	37,711	36,873
Acquisitions
Fair value of common stock shares issued	92,385	0
Cash consideration	26,009	0
Fair value of assets acquired	1,180,710	0
Liabilities assumed	$ 1,087,555	$ 0