Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Operating Activities:
Net Income	$ 16,713	$ 14,122
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	1,250	0	$ 4,500
Depreciation and Amortization	660	709
Net Amortization/Accretion of Investment Security Premiums & Discounts	407	125
Amortization of Core Deposit Intangible	153	157
Accretion of Discount on Acquired Loans	(16)	(90)
Net Gain on Sale of Investment Securities	(1,840)	(13)
Net Change in Operating Assets & Liabilities:
Net Decrease in Interest Receivable and Other Assets	10,308	8,718
Net Increase (Decrease) in Interest Payable and Other Liabilities	1,386	(3,417)
Net Cash Provided by Operating Activities	29,021	20,311
Investing Activities:
Purchase of Investment Securities Available-for-Sale	(199,440)	(67,661)
Proceeds from Sold, Matured or Called Securities Available-for-Sale	110,388	57,595
Purchase of Investment Securities Held-to-Maturity	(3,211)	(2,380)
Proceeds from Matured or Called Securities Held-to-Maturity	3,930	3,904
Net Loans & Leases Paid, Originated or Acquired	(11,340)	2,820
Additions to Premises and Equipment, Net	(100)	(1,352)
Purchase of Other Investments	(632)	(2,289)
Net Cash Used in Investing Activities	(100,405)	(9,363)
Financing Activities:
Net Increase (Decrease) in Deposits	180,947	(22,746)
Cash Dividends Returned	7	0
Net Cash Provided by (Used in) Financing Activities	180,954	(22,746)
Net Change in Cash and Cash Equivalents	109,570	(11,798)
Cash and Cash Equivalents at Beginning of Period	383,837	294,758	294,758
Cash and Cash Equivalents at End of Period	493,407	282,960	$ 383,837
Supplementary Data
Cash Payments Made for Income Taxes	0	3
Issuance of Common Stock to the Bank's Non-Qualified Retirement Plans	0	403
Interest Paid	1,943	3,628
Supplementary Noncash Disclosure
Investment Securities Available-for-Sale Transferred to Held-to-Maturity	$ 316,925	$ 0