Fair Value Measurements (Fair Value, by Balance Sheet Grouping) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets: Cash and cash equivalents	$ 41,485	$ 15,473
Financial Assets: Interest-bearing time balances with other financial institutions	16,808	23,563
Financial Assets: Investment Securities	145,506	154,295
Financial Assets: Net loans and leases	502,295	495,181
Financial Assets: Restricted investment in bank stocks	2,197	2,503
Financial Assets: Accrued interest receivable	2,846	2,893
Financial Assets: Mortgage servicing rights	230	233
Financial Liabilities: Deposits	643,259	629,096
Financial Liabilities: Long-term debt	22,392	23,240
Financial Liabilities: Accrued interest payable	736	620
Financial Assets: Cash and cash equivalents, Carrying Value	41,485	15,473
Financial Assets: Interest bearing time balances with other financial institutions, Carrying Value	16,808	23,563
Available-for-sale Securities	145,506	154,295	154,295
Financial Assets: Net loans and leases, Carrying Value	489,326	478,711
Financial Assets: Restricted investment in bank stocks, Carrying Value	2,197	2,503
Financial Assets: Acrued interest receivable, Carrying Value	2,846	2,893
Financial Assets: Mortgage Servicing Rights, Carrying Value	230	233
Financial Liabilities: Deposits, Carrying Value	640,185	625,461
Financial Liabilities: Long-term debt, Carrying Value	21,777	22,510
Financial Liabilities: Accrued interest payable, Carrying Value	736	620
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	387	390
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	145,119	153,905
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities
Commitments to Extend Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Off-balance sheet financial instruments	0	0
Off-balance sheet financial instruments, Carrying Value	0	0
Standby Letters Of Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Off-balance sheet financial instruments	0	0
Off-balance sheet financial instruments, Carrying Value	$ 0	$ 0