Fair Values of Financial Instruments (Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying Amount [Member]
Assets
Cash and cash equivalents	$ 32,323	$ 33,414
Interest-bearing deposits	3,496	4,239
Loans held for sale	13,397	3,987
Loans	1,476,925	1,482,662
FHLB stock	13,115	13,034
Interest receivable	6,932	6,940
Liabilities
Deposits	1,553,478	1,519,225
FHLB advances	245,879	292,497
Other borrowings	17,573	17,988
Interest payable	1,071	1,075
Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	32,323	33,414
Interest-bearing deposits	3,496	4,239
Loans held for sale	13,798	4,011
Loans	1,450,636	1,456,270
FHLB stock	13,115	13,034
Interest receivable	6,932	6,940
Liabilities
Deposits	1,555,045	1,514,852
FHLB advances	246,512	290,092
Other borrowings	17,150	17,665
Interest payable	1,071	1,075
Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	32,323	33,414
Interest-bearing deposits	3,496	4,239
Liabilities
Deposits	1,050,827	1,030,785
Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement [Member]
Assets
Loans held for sale	13,798	4,011
FHLB stock	13,115	13,034
Interest receivable	6,932	6,940
Liabilities
FHLB advances	246,512	290,092
Other borrowings	17,150	17,665
Interest payable	1,071	1,075
Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement [Member]
Assets
Loans	1,450,636	1,456,270
Liabilities
Deposits	$ 504,218	$ 484,067