Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net Income	$ 39,770	$ 4,727
Provision for credit losses	(4,390)	30,967
Deferred tax expense (benefit)	3,859	(3,551)
Depreciation and amortization	3,003	2,926
Net gains on securities and other assets	(8,452)	(1,645)
Net amortization of premiums and discounts on securities	1,268	1,310
Income from increase in cash surrender value of bank owned life insurance	(1,621)	(1,610)
Decrease (increase) in interest receivable	1,899	(761)
Mortgage loans originated for sale	(121,280)	(65,236)
Proceeds from sale of mortgage loans	140,780	61,777
Increase in interest payable	1,128	1,122
Increase in income taxes payable	5,626	4,528
Increase (Decrease) in Other Operating Assets and Liabilities, Net	10,360	1,438
Net cash provided by operating activities	51,230	33,116
Investing Activities
Proceeds from sale and maturity of held-to-maturity securities	28,936	18,504
Payments to Acquire Held-to-maturity Securities	(135,130)	0
Proceeds from Sale of Available-for-sale Securities	0	0
Proceeds from maturities and redemptions of available-for-sale securities	206,993	50,107
Purchases of available-for-sale securities	(435,563)	(127,368)
Purchases of FHLB stock	(1,558)	(18,682)
Proceeds from the redemption of FHLB stock	340	16,028
Proceeds from Life Insurance Policy	2,931	557
Proceeds from Sale of Loans Receivable	15,483	7,960
Proceeds from sale of other assets	2,226	1,361
Net decrease (increase) in loans	2,970	(140,013)
Payments for Purchase of Other Assets	(2,322)	(3,654)
Net cash used in investing activities	(314,694)	(195,200)
Financing Activities
Net increase in federal funds purchased	0	27,000
Net decrease in other short-term borrowings	(6,611)	(81,882)
Net increase in deposits	430,633	245,591
Repayments of other long-term debt	(169)	(162)
Repayments of Long-term Capital Lease Obligations	115	105
Payments of Dividends	(10,578)	(10,819)
Purchase of treasury stock	(1,643)	(5,220)
Net cash provided by financing activities	411,517	174,403
Net increase in cash and cash equivalents	148,053	12,319
Cash and cash equivalents at January 1	356,581	121,856
Cash and cash equivalents at March 31	$ 504,634	$ 134,175