Fair Value Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Financial Instruments [Line Items]
Fair Value, Financial Instruments, Loans, Net	$ 383,801	$ 391,470
Fair Value, Financial Instruments, Time Deposits	256,499	263,195
Fair Value, Financial Instruments, Long-term Debt	37,217	47,217
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Financial Instruments [Line Items]
Fair Value, Financial Instruments, Loans, Net	391,778	399,533
Fair Value, Financial Instruments, Time Deposits	260,825	267,636
Fair Value, Financial Instruments, Long-term Debt	39,993	51,752
Fair Value, Inputs, Level 1 [Member]
Fair Value, Financial Instruments [Line Items]
Fair Value, Financial Instruments, Loans, Net	0	0
Fair Value, Financial Instruments, Time Deposits	0	0
Fair Value, Financial Instruments, Long-term Debt	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Financial Instruments [Line Items]
Fair Value, Financial Instruments, Loans, Net	0	0
Fair Value, Financial Instruments, Time Deposits	260,825	267,636
Fair Value, Financial Instruments, Long-term Debt	39,993	51,752
Fair Value, Inputs, Level 3 [Member]
Fair Value, Financial Instruments [Line Items]
Fair Value, Financial Instruments, Loans, Net	391,778	399,533
Fair Value, Financial Instruments, Time Deposits	0	0
Fair Value, Financial Instruments, Long-term Debt	$ 0	$ 0