Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 58,820	$ 26,043
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	(4,000)	20,469
Depreciation and amortization, premises and equipment	4,788	4,299
Amortization of premiums and discounts: AFS securities, deposits, debt	3,204	5,011
Operating leases: excess of payments over amortization	(2,016)	(1,813)
Amortization of finance leases	546	709
Amortization of core deposit intangibles	587	689
Amortization of deferred loan fees and costs	(4,825)	1,536
Share-based compensation expense	1,665	1,184
Lease impairment costs	180	2,617
Deferred income tax expense (benefit)	5,353	(8,188)
Origination of LHFS	(1,336,342)	(983,212)
Proceeds from sale of LHFS	1,380,651	820,312
Net fair value adjustment and gain on sale of LHFS	(25,441)	(32,701)
Origination of MSRs	(20,472)	(9,978)
Net gain on sale of LHFI	(4,613)	(1,864)
Change in fair value of mortgage servicing rights	4,434	26,678
Amortization of MSRs	3,477	2,734
(Increase) decrease in other assets	(6,414)	(20,022)
Increase (decrease) in accounts payable and other liabilities	(4,407)	183
Net cash provided by (used in) operating activities	55,175	(145,314)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of investment securities	(86,333)	(335,037)
Proceeds from sale of investment securities	28,187	55,615
Principal payments on investment securities	114,367	77,845
Proceeds from sale of OREO	0	650
Proceeds from sale of LHFI	251,474	244,723
Net cash provided by disposal of discontinued operations	0	2,758
Net increase in LHFI	(272,051)	(423,497)
Purchase of premises and equipment	(827)	(1,145)
Proceeds from sale of Federal Home Loan Bank stock	86,321	97,646
Purchases of Federal Home Loan Bank stock	(76,726)	(90,913)
Net cash provided by (used in) investing activities	44,412	(371,355)
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase (decrease) in deposits, net	264,898	316,301
Changes in short-term borrowings, net	(322,800)	242,000
Proceeds from other long-term borrowings	50,000	0
Repayment of finance lease principal	(613)	(724)
Repurchases of common stock	(50,001)	(26,001)
Proceeds from exercise of stock options	263	237
Dividends paid on common stock	(10,912)	(7,106)
Net cash provided by (used in) financing activities	(69,165)	524,707
Net increase in cash and cash equivalents	30,422	8,038
Cash and cash equivalents, beginning of year	58,049	57,880
Cash and cash equivalents, end of period	88,471	65,918
Cash paid during the period for:
Interest	9,517	29,532
Federal and state income taxes	23,367	516
Non-cash activities:
Increase in lease assets and lease liabilities	467	0
Decrease in lease assets and lease liabilities	0	38,754
Loans transferred from LHFI to LHFS	146,270	120,691
Loans transferred from LHFS to LHFI	17,446	4,340
Ginnie Mae loans recognized with the right to repurchase, net	0	12,341
Ginnie Mae loans derecognized with the right to repurchase, net	44,680	0
Repurchase of common stock-award settlement	$ 3,124	$ 425