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	$ 28,171	$ 17,059
Adjustments to reconcile net income to net cash provided by operations:
Provision for credit loss expense	4,089	8,759
Depreciation and amortization of premises and equipment, operating leases assets, core deposit intangible, and mortgage servicing rights	3,390	2,914
Amortization (accretion) of securities, deferred loan fees and costs, net yield and credit mark on acquired loans, and unearned income	(1,058)	(856)
Accretion of deferred PPP processing fees	(4,370)	0
Net realized gains on sales of available-for-sale securities	0	2,190
Net realized and unrealized (gains) losses on trading securities	(470)	282
Gain on sale of loans	(1,568)	(820)
Net losses (gains) on dispositions of premises and equipment and foreclosed assets	245	253
Proceeds from sale of loans	35,912	40,520
Origination of loans held for sale	(42,030)	(45,970)
Income on bank owned life insurance, including death benefit proceeds in excess of cash surrender value	(1,444)	(865)
Stock-based compensation expense	812	835
Changes in:
Accrued interest receivable and other assets	(1,567)	(6,697)
Accrued interest payable, lease liabilities, and other liabilities	833	(2,307)
NET CASH PROVIDED BY OPERATING ACTIVITIES	20,945	10,917
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities, prepayments and calls of available-for-sale securities	87,541	71,803
Proceeds from sales of available-for-sale securities	0	57,185
Purchase of available-for-sale securities	(190,818)	(121,506)
Proceeds from sale of trading securities	0	5,935
Purchase of trading securities	(201)	(2,297)
Loan origination and payments, net	(87,969)	(228,598)
Purchase of BOLI	(22,000)	0
Proceeds from death benefit of BOLI policies	1,390	0
Redemption (purchase) of FHLB, other equity, and restricted equity interests	(460)	(793)
Purchase of premises and equipment	(2,463)	(2,697)
Proceeds from the sale of premises and equipment and foreclosed assets	518	571
NET CASH USED BY INVESTING ACTIVITIES	(214,462)	(220,397)
Net change in:
Checking, money market and savings accounts	355,307	519,615
Certificates of deposit	(32,286)	(25,920)
Purchase of treasury stock	(160)	(325)
Cash dividends paid, common stock	(5,731)	(5,235)
Cash dividends paid, preferred stock	(2,150)	0
Proceeds from common stock offering, net of issuance costs	0	3,313
Proceeds from issuance of subordinated notes, net of issuance costs	83,516	0
Repayment of long-term borrowings	0	(34,379)
Proceeds from long-term borrowings	0	222,785
NET CASH PROVIDED BY FINANCING ACTIVITIES	398,496	679,854
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	204,979	470,374
CASH AND CASH EQUIVALENTS, Beginning	532,694	192,974
CASH AND CASH EQUIVALENTS, Ending	737,673	663,348
Cash paid during the period for:
Interest	10,293	18,151
Income taxes	5,582	240
SUPPLEMENTAL NONCASH DISCLOSURES:
Transfers to other real estate owned	314	189
Transfers from loans held for sale to loans held for investment	7,044	0
Transfers from loans held for investment to loans held for sale	1,798	0
Grant of restricted stock awards from treasury stock	1,228	892
Grant of performance based restricted stock awards from treasury stock	$ 262	$ 217