Fair Values (Carrying Amounts and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale investment securities	$ 111,783	$ 115,184
HTM investment securities	62,390	67,022
Loans held-for-sale	651
Time deposits	140,490	187,256
Brokered deposits	41,812	29,286
Subordinated debt	9,750	9,750
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10,917	22,103
Available-for-sale investment securities	111,783	115,184
HTM investment securities	62,390	67,022
Restricted stock	7,641	5,381
Loans held-for-sale	651
Loans, net of allowance, including impaired	840,054	812,156
Accrued interest receivable	3,822	3,567
Non-interest-bearing deposits	176,815	173,467
Other interest-bearing deposits	502,086	495,178
Time deposits	140,490	187,256
Brokered deposits	41,812	29,286
Repurchase agreements	12,023	11,889
FHLBP advances	79,013	55,332
Junior subordinated debentures and other borrowings	9,279	9,279
Subordinated debt	9,750	9,750
Accrued interest payable	554	534
Off-balance sheet instruments
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10,917	22,103
Available-for-sale investment securities	111,783	115,184
HTM investment securities	62,420	66,124
Restricted stock	7,641	5,381
Loans held-for-sale	657
Loans, net of allowance, including impaired	821,672	792,190
Accrued interest receivable	3,822	3,567
Non-interest-bearing deposits	176,815	173,467
Other interest-bearing deposits	502,086	495,178
Time deposits	139,406	186,012
Brokered deposits	42,304	28,873
Repurchase agreements	12,023	11,889
FHLBP advances	78,531	54,734
Junior subordinated debentures and other borrowings	9,373	8,637
Subordinated debt	9,577	10,493
Accrued interest payable	554	534
Off-balance sheet instruments
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10,917	22,103
Accrued interest payable
Off-balance sheet instruments
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale investment securities	111,783	115,184
HTM investment securities	60,420	64,124
Restricted stock	7,641	5,381
Accrued interest receivable	3,822	3,567
Non-interest-bearing deposits	176,815	173,467
Other interest-bearing deposits	502,086	495,178
Time deposits	139,406	186,012
Brokered deposits	42,304	28,873
Repurchase agreements	12,023	11,889
FHLBP advances	78,531	54,734
Junior subordinated debentures and other borrowings	9,373	8,637
Subordinated debt	9,577	10,493
Accrued interest payable	554	534
Off-balance sheet instruments
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
HTM investment securities	2,000	2,000
Loans held-for-sale	657
Loans, net of allowance, including impaired	821,672	792,190
Accrued interest payable
Off-balance sheet instruments