Fair Value Measurements (Fair Value, by Balance Sheet Grouping) (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Carrying Amount	$ 15,398,000	$ 19,078,000	$ 13,620,000
Cash and due from banks, Fair Value	15,398,000	19,078,000
Interest-bearing deposits in banks, Carrying Amount	22,820,000	32,307,000	53,605,000
Interest-bearing deposits in banks, Fair Value	22,820,000	32,307,000
Securities available for sale	141,536,000	165,790,000	188,711,000
Investment securities available for sale, Fair Value	141,536,000	165,790,000
Held-to-maturity Securities	90,314,000	50,159,000	28,388,000
Investment securities held to maturity, Fair Value	88,351,000	50,980,000
Loans held for sale, Carrying Amount	2,427,000	6,687,000	1,540,000
Loans held for sale, Fair Value	2,427,000	6,687,000
Loans, less allowance for loan losses, Carrying Amount	683,357,000	691,311,000	676,984,000
Loans, less allowance for loan losses, Fair Value	704,447,000	724,982,000
Accrued interest receivable, Carrying Amount	3,200,000	3,360,000
Accrued interest receivable, Fair Value	3,200,000	3,360,000
Restricted investment in bank stocks, Carrying Amount	4,603,000	5,318,000	6,478,000
Restricted investment in bank stocks, Fair Value	4,603,000	5,318,000
Deposits, Carrying Amount	826,385,000	834,176,000	817,962,000
Deposits, Fair Value	826,943,000	835,640,000
Short-term borrowings, Carrying Amount	51,250,000	47,303,000	42,601,000
Short-term borrowings, Fair Value	51,250,000	47,303,000
Long-term borrowings, Carrying Amount	52,830,000	59,954,000	80,074,000
Long-term borrowings, Fair Value	54,614,000	62,296,000
Accrued interest payable, Carrying Amount	736,000	1,114,000
Accrued interest payable, Fair Value	736,000	1,114,000
Off-balance sheet financial instruments, Carrying Amount	0	0
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	7,928,000	5,832,000
Interest-bearing deposits in banks, Fair Value	22,820,000	32,307,000
Investment securities available for sale, Fair Value	1,914,000	1,876,000
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	7,470,000	13,246,000
Investment securities available for sale, Fair Value	139,622,000	163,914,000
Investment securities held to maturity, Fair Value	88,351,000	50,980,000
Loans held for sale, Fair Value	2,427,000	6,687,000
Accrued interest receivable, Fair Value	3,200,000	3,360,000
Restricted investment in bank stocks, Fair Value	4,603,000	5,318,000
Deposits, Fair Value	826,943,000	835,640,000
Short-term borrowings, Fair Value	51,250,000	47,303,000
Long-term borrowings, Fair Value	54,614,000	62,296,000
Accrued interest payable, Fair Value	736,000	1,114,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, less allowance for loan losses, Fair Value	$ 704,447,000	$ 724,982,000