Fair Values of Financial Instruments (Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Carrying Amount [Member]
Assets
Cash and cash equivalents	$ 31,350	$ 33,414
Interest-bearing deposits	4,311	4,239
Loans held for sale	8,702	3,987
Loans	1,490,729	1,482,662
FHLB stock	13,115	13,034
Interest receivable	7,060	6,940
Liabilities
Deposits	1,559,771	1,519,225
FHLB advances	256,236	292,497
Other borrowings	17,810	17,988
Interest payable	1,029	1,075
Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	31,350	33,414
Interest-bearing deposits	4,311	4,239
Loans held for sale	8,753	4,011
Loans	1,464,194	1,456,270
FHLB stock	13,115	13,034
Interest receivable	7,060	6,940
Liabilities
Deposits	1,557,550	1,514,852
FHLB advances	254,857	290,092
Other borrowings	17,462	17,665
Interest payable	1,029	1,075
Fair Value, Inputs, Level 1 | Estimate of Fair Value Measurement [Member]
Assets
Cash and cash equivalents	31,350	33,414
Interest-bearing deposits	4,311	4,239
Liabilities
Deposits	1,046,796	1,030,785
Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement [Member]
Assets
Loans held for sale	8,753	4,011
FHLB stock	13,115	13,034
Interest receivable	7,060	6,940
Liabilities
FHLB advances	254,857	290,092
Other borrowings	17,462	17,665
Interest payable	1,029	1,075
Fair Value, Inputs, Level 3 | Estimate of Fair Value Measurement [Member]
Assets
Loans	1,464,194	1,456,270
Liabilities
Deposits	510,754	484,067
Interest Rate Swap [Member]
Assets
Interest rate swap asset	667	599
Liabilities
Interest rate swap liability	667	599
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1
Assets
Interest rate swap asset
Liabilities
Interest rate swap liability
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2
Assets
Interest rate swap asset	667	599
Liabilities
Interest rate swap liability	667	599
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3
Assets
Interest rate swap asset
Liabilities
Interest rate swap liability