Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net Income	$ 39,548	$ 28,332
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	(286)	8,083
Depreciation and Amortization	5,894	4,669
Net (Gain) Loss on Securities Transactions	(250)	552
Loans Originated and Held-for-Sale	(45,930)	(60,335)
Proceeds from the Sale of Loans Held-for-Sale	57,097	52,099
Net Gain on the Sale of Loans	(2,251)	(2,193)
Net Loss (Gain) on the Sale of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	68	(157)
Contributions to Retirement Benefit Plans	(441)	(540)
Deferred Income Tax Benefit	(35)	(2,255)
Shares Issued Under the Directors’ Stock Plan	284	125
Stock-Based Compensation Expense	310	315
Tax Benefit from Exercise of Stock Options	69	41
Net Increase in Other Assets	(92)	(5,924)
Net Increase in Other Liabilities	1,727	4,751
Net Cash Provided By Operating Activities	55,712	27,563
Cash Flows from Investing Activities:
Proceeds from the Maturities and Calls of Securities Available-for-Sale	93,332	75,449
Purchases of Securities Available-for-Sale	(222,089)	(86,832)
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	24,266	26,570
Purchases of Securities Held-to-Maturity	(4,695)	(6,848)
Net Increase in Loans	(70,393)	(197,577)
Proceeds from the Sales of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	1,054	2,332
Purchase of Premises and Equipment	(3,942)	(3,639)
Net (Increase) Decrease in FHLB and Federal Reserve Bank Stock	(31)	4,743
Purchase of Bank Owned Life Insurance	0	(12,000)
Net Cash Used By Investing Activities	(182,498)	(197,802)
Cash Flows from Financing Activities:
Net Increase in Deposits	370,837	648,804
Net Decrease in Short-Term Federal Home Loan Bank Borrowings	0	(130,000)
Net (Decrease) Increase in Short-Term Borrowings	(15,060)	22,850
Finance Lease Payments	(36)	(26)
Federal Home Loan Bank Advances	0	40,000
Repayments of Federal Home Loan Bank Term Advances	0	(20,000)
Purchase of Treasury Stock	(2,633)	(1,571)
Stock Options Exercised, Net	1,453	596
Shares Issued Under the Employee Stock Purchase Plan	363	392
Shares Issued for Dividend Reinvestment Plans	1,366	1,349
Cash Dividends Paid	(12,129)	(11,710)
Net Cash Provided By Financing Activities	344,161	550,684
Net Increase in Cash and Cash Equivalents	217,375	380,445
Cash and Cash Equivalents at Beginning of Period	380,991	70,221
Cash and Cash Equivalents at End of Period	598,366	450,666
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	4,224	11,367
Income Taxes	11,060	8,369
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	$ 1,066	$ 711