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Condensed Financial Statements Of Parent Company (Condensed Statements Of Cash Flows Of Parent Company) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]    
Net income $ 4,980 $ 5,605
Amortization of debt issuance costs 2  
(Increase) decrease in other assets (474) 421
(Increase) decrease in other liabilities 566 286
Net cash provided by operating activities 5,199 5,592
Dividends paid to common stockholders (1,215) (1,226)
Retirement of capital notes (5,000)  
Proceeds from sale of 3.25% capital notes due 6/30/2025 10,025  
Repurchases of common stock (275) (315)
Net cash (used in) financing activities 118,629 35,719
Increase (decrease) in cash and cash equivalents 61,775 (11,214)
Cash and cash equivalents at beginning of period 39,111 50,325
Cash and cash equivalents at end of period 100,886 39,111
Parent Company [Member]    
Condensed Cash Flow Statements, Captions [Line Items]    
Net income 4,980 5,605
Amortization of debt issuance costs 2  
(Increase) decrease in income taxes receivable (59) 10
(Increase) decrease in other assets (2) 11
(Increase) decrease in other liabilities 161 (12)
Equity in undistributed net (income) of subsidiaries (4,429) (4,210)
Net cash provided by operating activities 651 1,404
Dividends paid to common stockholders (1,215) (1,226)
Retirement of capital notes (5,000)  
Proceeds from sale of 3.25% capital notes due 6/30/2025 10,025  
Repurchases of common stock (275) (315)
Net cash (used in) financing activities 3,537 (1,541)
Increase (decrease) in cash and cash equivalents 4,188 (137)
Cash and cash equivalents at beginning of period 212 349
Cash and cash equivalents at end of period $ 4,400 $ 212