Fair Values of Assets and Liabilities (Assets and Liabilities Measured at Fair Value on Nonrecurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Bank premises and equipment held for sale	$ 1,589	$ 1,252
Other real estate owned	4,527	1,099
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	3,020	9,343
Loans held for sale	501	146
Bank premises and equipment held for sale	1,589	1,252
Other real estate owned	4,527	1,099
Total assets at fair value	9,637	11,840
Liabilities Fair Value Disclosure Recurring
Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans
Loans held for sale
Bank premises and equipment held for sale
Other real estate owned
Total assets at fair value
Liabilities Fair Value Disclosure Recurring
Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans
Loans held for sale	501	146
Bank premises and equipment held for sale
Other real estate owned
Total assets at fair value	501	146
Liabilities Fair Value Disclosure Recurring
Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	3,020	9,343
Loans held for sale
Bank premises and equipment held for sale	1,589	1,252
Other real estate owned	4,527	1,099
Total assets at fair value	9,136	11,694
Liabilities Fair Value Disclosure Recurring