Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES
Consolidated net income	$ 35,625	$ 29,590
Adjustments to reconcile consolidated net income to net cash provided (used) by operating activities
Provision for loan losses	1,012	6,631
Deferred income taxes provision	(1,056)	(902)
Depreciation and amortization of premises and equipment	3,180	3,155
Loss on disposal of premises and equipment	29	4
Net amortization of securities	3,999	3,101
Net realized gains on sales of securities	(28)	(425)
Gains on mortgage loans sold, net	(7,929)	(6,808)
Stock-based compensation expense	986	904
Loss (gain) on other real estate	15	(652)
Gain on sale of repossessed assets	(2)	(2)
Increase in value of life insurance and annuity contracts	(766)	(635)
Mortgage loans originated for resale	(167,429)	(169,441)
Proceeds from sale of mortgage loans	184,296	157,822
Gain on lease modification	0	(29)
Right of use asset amortization	1,299	912
Change in
Accrued interest receivable	(681)	(2,040)
Other assets	(4,598)	(2,454)
Accrued interest payable	(860)	(554)
Other liabilities	5,917	6,241
TOTAL ADJUSTMENTS	17,384	(5,172)
NET CASH PROVIDED BY OPERATING ACTIVITIES	53,009	24,418
INVESTING ACTIVITIES
Purchases	(403,894)	(324,197)
Sales	39,652	24,028
Maturities, prepayments and calls	120,378	152,591
Purchase of restricted equity securities	0	(409)
Net increase in loans	(94,979)	(202,994)
Purchase of buildings, leasehold improvements, and equipment	(7,671)	(1,734)
Proceeds from sale of other assets	83	4
Proceeds from sale of other real estate	167	1,311
Purchase of life insurance and annuity contracts	(15,000)	(4,662)
Increase in other investments	(2,000)	0
NET CASH USED IN INVESTING ACTIVITIES	(363,264)	(356,062)
FINANCING ACTIVITIES
Net change in deposits - non-maturing	421,953	429,271
Net change in deposits - time	(8,052)	(13,294)
Net change in Federal Home Loan Bank Advances	(3,638)	(6,430)
Change in escrow balances	(2,148)	10,794
Issuance of common stock related to exercise of stock options	573	347
Issuance of common stock pursuant to dividend reinvestment plan	11,188	10,056
Cash dividends paid on common stock	(14,910)	(13,013)
NET CASH PROVIDED BY FINANCING ACTIVITIES	404,966	417,731
NET CHANGE IN CASH AND CASH EQUIVALENTS	94,711	86,087
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD	338,856	159,770
CASH AND CASH EQUIVALENTS - END OF PERIOD	433,567	245,857
Supplemental disclosure of cash flow information:
Interest	9,259	12,860
Taxes	13,327	10,256
Change in fair value of securities available-for-sale, net of taxes of $3,019 and $2,341 for the nine months ended September 30, 2021 and 2020, respectively	(8,530)	6,615
Non-cash transfers from loans to other real estate	182	992
Non-cash transfers from loans to other assets	$ 81	$ 5