Commitments and Contingent Liabilities (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	$ 76,149,000	$ 81,259,000
Outstanding guarantees of standby letters of credits issued to developers and contractors	546,000	546,000
Number of standby letters of credit securing payment of principal and interest on bond issue	4
Total participation amounts of standby letters of credit	5,000,000	5,000,000
Guarantee expiration date	Jul. 15, 2014
Commitments for capital expenditures	70,000
Commercial Loan [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	1,332,000	3,227,000
Other Loans [Member] | Fixed Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	2,560,000	1,391,000
Other Loans [Member] | Adjustable Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	1,194,000	2,099,000
Unused lines of Credit [Member] | Fixed Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	3,750,000	3,883,000
Unused lines of Credit [Member] | Adjustable Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	51,966,000	55,274,000
Unused Overdraft Protection Amounts on Demad and NOW Accounts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	9,772,000	9,810,000
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, liability	$ 5,575,000	$ 5,575,000