Fair Value Measurements (Schedule of Valuation Methodologies Used to Measure the Fair Value Adjustments for Level 3 Assets Recorded at Fair Value on a Nonrecurring Basis) (Details)	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item	Dec. 31, 2015 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Investments in joint venture | $	$ 891,000	$ 887,000	$ 900,000
Foreclosed assets | $	301,000	0
Significant Unobservable Inputs Level 3 [Member] | Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Impaired Loans | $	8,640,000	11,616,000
Significant Unobservable Inputs Level 3 [Member] | Joint Venture [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Investments in joint venture | $	$ 891,000	$ 887,000
Investment in joint venture, measurement input	0	0
Significant Unobservable Inputs Level 3 [Member] | Foreclosed Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Foreclosed assets | $	$ 301,000
Foreclosed assets. measurement input	0.06
Minimum [Member] | Significant Unobservable Inputs Level 3 [Member] | Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Impaired Loans Unobservable Input	0.21	0.15
Maximum [Member] | Significant Unobservable Inputs Level 3 [Member] | Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Impaired Loans Unobservable Input	0.81	0.72
Weighted Average [Member] | Significant Unobservable Inputs Level 3 [Member] | Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Impaired Loans Unobservable Input	0.23	0.33
Weighted Average [Member] | Significant Unobservable Inputs Level 3 [Member] | Joint Venture [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Investment in joint venture, measurement input	0	0
Weighted Average [Member] | Significant Unobservable Inputs Level 3 [Member] | Foreclosed Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis, Valuation Techniques [Line Items]
Foreclosed assets. measurement input	0.06