CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net income	$ 32,999	$ 6,030
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	880	949
(Reversal of) provision for credit losses	(5,766)	16,000
Amortization of intangibles	507	652
Net accretion of loans	(1,406)	(1,996)
Accretion on bank premises	(23)	(23)
Accretion on deposits	(650)	(1,503)
(Accretion) amortization on borrowings, net	(17)	43
Stock-based compensation	972	536
Gains on sales of securities available-for-sale, net		(29)
Losses (gains) on equity securities, net	187	(178)
Gains on sale of loans held-for-sale, net	(707)	(393)
Loans originated for resale	(23,348)	(5,186)
Proceeds from sale of loans held-for-sale	21,856	17,324
Gain on sale of branches	(674)
Net losses on disposition of other premises and equipment	22
Increase in cash surrender value of bank owned life insurance	(1,064)	(968)
Amortization of premiums and accretion of discounts on securities available-for-sale	1,605	1,101
Amortization of subordinated debentures issuance costs	76	82
Decrease increase in accrued interest receivable	68	(458)
Net change in operating leases	(131)	(19)
Decrease in other assets	47,156	17,366
Increase (decrease) in other liabilities	7,589	(2,869)
Net cash provided by operating activities	80,131	46,461
Cash flows from investing activities
Purchases	(33,305)	(86,731)
Sales		19,624
Maturities, calls and principal repayments	72,193	50,294
Net purchases (redemptions) of restricted investment in bank stocks	2,616	(8,094)
Purchases of equity securities		(2,000)
Payments on loans held-for-sale	9	75
Net increase in loans	(36,553)	(130,187)
Purchases of bank owned life insurance		(25,000)
Purchases of premises and equipment	(67)	(1,728)
Proceeds from sale of branches	729
Proceeds from sale of OREO		992
Cash and cash equivalents acquired in acquisition, net		87,391
Net cash provided by (used) in investing activities	5,622	(95,364)
Cash flows from financing activities
Net decrease in deposits	(7,240)	(42,225)
Advances of Federal Home Loan Bank ("FHLB") borrowings		980,000
Repayments of FHLB borrowings	(66,227)	(803,222)
Decrease in subordinated debt	(50,000)
Cash dividends paid on common stock	(3,584)	(3,576)
Repurchase of treasury stock	(2,411)	(911)
Proceeds from exercise of stock options	45	163
Net cash (used in) provided by financing activities	(129,417)	130,229
Net change in cash and cash equivalents	(43,664)	81,326
Cash and cash equivalents at beginning of period	303,756	201,483
Cash and cash equivalents at end of period	260,092	282,809
Cash payments for:
Interest paid on deposits and borrowings	11,690	24,627
Income taxes	4,350	7,476
Investing:
Transfer of loans from held-for-investment to held-for-sale		10,995
Business combinations:
Fair value of assets acquired		949,276
Fair value of liabilities assumed		$ 852,729