Fair Value Measurements (Fair Value, by Balance Sheet Grouping) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Carrying Amount	$ 16,371,000	$ 19,078,000	$ 12,338,000
Cash and due from banks, Fair Value	16,371,000	19,078,000
Interest-bearing deposits in banks, Carrying Amount	2,856,000	32,307,000	52,165,000
Interest-bearing deposits in banks, Fair Value	2,856,000	32,307,000
Securities available for sale	135,163,000	165,790,000	175,889,000
Investment securities available for sale, Fair Value	135,163,000	165,790,000
Held-to-maturity Securities	96,255,000	50,159,000	48,016,000
Investment securities held to maturity, Fair Value	94,667,000	50,980,000
Loans held for sale, Carrying Amount	603,000	6,687,000	3,618,000
Loans held for sale, Fair Value	603,000	6,687,000
Loans, less allowance for loan losses, Carrying Amount	701,251,000	691,311,000	686,082,000
Loans, less allowance for loan losses, Fair Value	719,953,000	724,982,000
Accrued interest receivable, Carrying Amount	3,134,000	3,360,000
Accrued interest receivable, Fair Value	3,134,000	3,360,000
Restricted investment in bank stocks, Carrying Amount	4,189,000	5,318,000	5,887,000
Restricted investment in bank stocks, Fair Value	4,189,000	5,318,000
Deposits, Carrying Amount	819,231,000	834,176,000	831,351,000
Deposits, Fair Value	819,469,000	835,640,000
Short-term borrowings, Carrying Amount	57,418,000	47,303,000	52,926,000
Short-term borrowings, Fair Value	57,418,000	47,303,000
Long-term borrowings, Carrying Amount	47,767,000	59,954,000	70,015,000
Long-term borrowings, Fair Value	49,461,000	62,296,000
Accrued interest payable, Carrying Amount	695,000	1,114,000
Accrued interest payable, Fair Value	695,000	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	10,747,000	5,832,000
Interest-bearing deposits in banks, Fair Value	2,856,000	32,307,000
Investment securities available for sale, Fair Value	1,903,000	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	5,624,000	13,246,000
Investment securities available for sale, Fair Value	133,260,000	163,914,000
Investment securities held to maturity, Fair Value	94,667,000	50,980,000
Loans held for sale, Fair Value	603,000	6,687,000
Accrued interest receivable, Fair Value	3,134,000	3,360,000
Restricted investment in bank stocks, Fair Value	4,189,000	5,318,000
Deposits, Fair Value	819,469,000	835,640,000
Short-term borrowings, Fair Value	57,418,000	47,303,000
Long-term borrowings, Fair Value	49,461,000	62,296,000
Accrued interest payable, Fair Value	695,000	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	$ 719,953,000	$ 724,982,000