Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net income	$ 63,739	$ 65,218
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	1,942	1,746
Provision for (reversal of) credit losses	4,450	(7,415)
Amortization of intangibles	867	1,015
Net accretion of loans	(1,689)	(2,803)
Accretion on bank premises	(24)	(45)
Accretion on deposits	(518)	(1,248)
Amortization (accretion) on borrowings, net	14	(36)
Stock-based compensation	2,299	1,957
Gains on sales/redemptions of securities available-for-sale, net	0	(195)
Losses on equity securities, net	1,001	164
Gain on sale of branches	0	(674)
Net losses on disposition of other premises and equipment	0	27
Gains on sale of loans held-for-sale, net	(1,257)	(1,554)
Loans originated for resale	(14,795)	(30,600)
Proceeds from sale of loans held-for-sale	16,302	40,043
Gain on sale of other real estate owned	0	(18)
Increase in cash surrender value of bank owned life insurance	(2,548)	(2,249)
Amortization of premiums and accretion of discounts on securities available-for-sale	1,481	3,152
Amortization of subordinated debentures issuance costs	152	152
(Increase) decrease in accrued interest receivable	(463)	1,316
Net change in operating leases	(93)	(439)
(Increase) decrease in other assets	(4,024)	48,236
Increase in other liabilities	4,131	3,705
Net cash provided by operating activities	70,967	119,455
Cash flows from investing activities
Purchases	(296,254)	(126,641)
Maturities, calls and principal repayments	98,824	147,342
Purchases of equity securities	(3,200)	0
Net (purchases) redemptions of restricted investment in bank stocks	(19,461)	2,536
Payments on loans held-for-sale	2,390	18
Net increase in loans	(450,723)	(173,384)
Purchases of bank owned life insurance	(30,000)	(25,000)
Purchases of premises and equipment	(1,276)	(541)
Proceeds from sale of branches	0	1,087
Proceeds from sale of other real estate owned	0	321
Net cash used in investing activities	(699,700)	(174,262)
Cash flows from financing activities
Net increase in deposits	285,164	234,537
Increase in (repayment of) subordinated debentures	0	(50,000)
Advances of borrowings	1,450,181	100,000
Repayments of borrowings	(1,043,424)	(172,456)
Cash dividends on preferred stock	(3,018)	0
Repurchase of treasury stock	(13,127)	(2,411)
Cash dividends paid on common stock	(11,250)	(7,964)
Proceeds from exercise of stock options	124	45
Share redemption for tax withholdings on performance units and restricted stock units earned	(2,133)	(1,283)
Net cash provided by financing activities	662,517	100,468
Net change in cash and cash equivalents	33,784	45,661
Cash and cash equivalents at beginning of period	265,536	303,756
Cash and cash equivalents at end of period	299,320	349,417
Supplemental disclosures of cash flow information
Interest paid on deposits and borrowings	18,117	23,236
Income taxes	20,832	20,299
Supplemental disclosures of noncash activities
Transfer of loans from held-for-investment to other real estate owned	316	304
Transfer of loans from held-for-investment to held-for-sale	$ 5,572	$ 9,356