Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net Income	$ 13,280	$ 8,127
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	(648)	2,772
Depreciation and Amortization	1,951	1,597
Net (Gain) Loss on Securities Transactions	(160)	374
Loans Originated and Held-for-Sale	(24,037)	(9,322)
Proceeds from the Sale of Loans Held-for-Sale	32,093	7,975
Net Gain on the Sale of Loans	(1,415)	(213)
Net Loss (Gain) on the Sale of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	90	(91)
Contributions to Retirement Benefit Plans	(146)	(195)
Deferred Income Tax Expense (Benefit)	349	(873)
Shares Issued Under the Directors’ Stock Plan	98	0
Stock-Based Compensation Expense	104	103
Tax Benefit from Exercise of Stock Options	13	28
Net Increase in Other Assets	(3,077)	(5,719)
Net Increase in Other Liabilities	1,624	8,563
Net Cash Provided By Operating Activities	20,119	13,126
Cash Flows from Investing Activities:
Proceeds from the Maturities and Calls of Securities Available-for-Sale	25,977	17,444
Purchases of Securities Available-for-Sale	(130,481)	(33,201)
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	4,291	7,075
Purchases of Securities Held-to-Maturity	(619)	(717)
Net Increase in Loans	(51,866)	(27,317)
Proceeds from the Sales of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	259	781
Purchase of Premises and Equipment	(1,311)	(1,072)
Net (Increase) Decrease in FHLB and Federal Reserve Bank Stock	(11)	4,938
Net Cash Used By Investing Activities	(153,761)	(32,069)
Cash Flows from Financing Activities:
Net Increase in Deposits	218,862	194,951
Net Decrease in Short-Term Federal Home Loan Bank Borrowings	0	(130,000)
Net (Decrease) Increase in Short-Term Borrowings	(10,691)	6,810
Finance Lease Payments	(12)	(5)
Federal Home Loan Bank Advances	0	40,000
Repayments of Federal Home Loan Bank Term Advances	0	(20,000)
Purchase of Treasury Stock	0	(1,507)
Stock Options Exercised, Net	156	343
Shares Issued Under the Employee Stock Purchase Plan	124	121
Shares Issued for Dividend Reinvestment Plans	455	442
Cash Dividends Paid	(4,036)	(3,904)
Net Cash Provided By Financing Activities	204,858	87,251
Net Increase in Cash and Cash Equivalents	71,216	68,308
Cash and Cash Equivalents at Beginning of Period	380,991	70,221
Cash and Cash Equivalents at End of Period	452,207	138,529
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	1,626	5,264
Income Taxes	0	344
Non-cash Investing and Financing Activity:
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	$ 349	$ 371