CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
OPERATING ACTIVITIES
Net Cash Provided by Operating Activities	$ 153,301	$ 128,043
INVESTING ACTIVITIES
Purchases of securities	(311,969)	(153,587)
Proceeds from maturities, prepayments and calls of securities	79,759	72,951
Proceeds from sales of securities	0	1,917
Proceeds from redemption of Federal Home Loan Bank stock	11,465	13,137
Purchases of Federal Home Loan Bank stock	(9,895)	(10,213)
Net (increase) decrease in loans	(45,440)	201,545
Proceeds from sale of portfolio loans	4,326	3,438
Purchases of premises and equipment	(1,556)	(1,926)
Proceeds from the sale of premises and equipment	131	74
Net Cash (Used in) Provided by Investing Activities	(273,179)	127,336
FINANCING ACTIVITIES
Net (decrease) increase in core deposits	(277,322)	712,568
Net decrease in certificates of deposit	(106,915)	(117,782)
Net (decrease) increase in securities sold under repurchase agreements	(45,232)	3,424
Net decrease in short-term borrowings	0	(75,000)
Repayments on long-term borrowings	(442)	(712)
Repurchase of shares for taxes on restricted stock	(434)	(302)
Cash dividends paid to common shareholders	(23,145)	(21,963)
Repurchase of common stock	(4,153)	0
Net Cash (Used in) Provided by Financing Activities	(457,643)	500,233
Net (decrease) increase in cash and cash equivalents	(577,521)	755,612
Cash and cash equivalents at beginning of period	922,215	229,666
Cash and Cash Equivalents at End of Period	344,694	985,278
Supplemental Disclosures
Loans transferred to held for sale	0	2,798
Cash paid for interest	5,028	9,114
Cash paid for income taxes, net of refunds	12,225	12,097
Transfers of loans to other real estate owned	$ 18	$ 90