CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 52,814	$ 20,040
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,801	7,100
Provision (benefit) for credit losses	(648)	21,520
Net amortization of premium on securities	8,991	3,685
Securities (gains)/losses, net	30	(1,658)
Unrealized loss on equity securities, net	110	231
Stock based compensation	2,760	2,222
Loans originated for sale	(124,380)	(91,974)
Proceeds on sales of loans held for sale	145,200	100,425
Net gains on sale of loans held for sale	(5,908)	(4,660)
(Increase) decrease in accrued interest receivable	26	(667)
Increase in prepaid expenses	(578)	(157)
Increase in accrued interest payable	236	316
Capitalization of servicing rights	(512)	(414)
Valuation adjustment on servicing rights	(917)	1,565
Loss on sales/valuations of assets, net	194	16
Net excess tax benefit (expense) from stock based compensation	153	(25)
Other, net	(17,816)	(40,513)
NET CASH PROVIDED BY OPERATING ACTIVITIES	66,556	17,052
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of time deposits in other financial institutions	(9)	(4)
Proceeds from the sale of securities available for sale	207,067	328,890
Proceeds from the maturity of and principal paydowns on securities available for sale	159,773	92,413
Proceeds from the maturity of and principal paydowns on securities held to maturity	3,909	55
Proceeds from the maturity of time deposits in other financial institutions	0	150
Proceeds from the sale, maturity of and principal paydowns on other investments	1,003	5,613
Purchase of securities available for sale	(709,690)	(627,246)
Purchase of other investments	(685)	(9,662)
Net increase in loans	(29,674)	(5,568)
Purchase of bank owned life insurance policies	(22)	(39)
Capital expenditures	(3,776)	(3,723)
Proceeds from the sale of equipment	1,311	0
Proceeds on sale of OREO and other repossessed assets	1,209	1,019
NET CASH USED BY INVESTING ACTIVITIES	(369,584)	(218,102)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits	487,136	153,111
Net increase in savings deposits	159,547	59,185
Net decrease in time deposit accounts	(67,537)	(82,602)
Net decrease in short-term borrowings	(27,275)	(34,987)
Proceeds from short term advances	0	491,545
Repayments of short term advances	0	(517,742)
Proceeds from other borrowings	0	1,930
Repayments of other borrowings	(107,807)	(1,832)
Proceeds from issuance of common stock	196	804
Dividends paid	(11,273)	(7,353)
NET CASH PROVIDED BY FINANCING ACTIVITIES	432,987	62,059
Net increase (decrease) in cash and cash equivalents	129,959	(138,991)
Cash and cash equivalents at beginning of year	337,903	378,734	$ 378,734
CASH AND CASH EQUIVALENTS AT END OF PERIOD	467,862	239,743	$ 337,903
Supplemental disclosures:
Cash paid for income/franchise taxes	15,744	12
Cash paid for interest	7,611	18,222
Loans transferred to OREO	585	245
Transfer of premises from premises, furniture and equipment, net, to premises, furniture and equipment held for sale	1,140	0
Transfer of premises from premises, furniture and equipment held for sale to premises, furniture and equipment, net	6	0
Dividends declared, not paid	2,013	0
Purchases of securities available for sale, accrued, not settled	0	14,035
Transfer of available for sale securities to held to maturity securities	$ 0	$ 462