Loans by Type (Details Textual) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Loan Disclosure	Impaired loans consist primarily of nonaccrual loans, loans greater than 90 days past due and still accruing interest and troubled debt restructurings, both performing and nonperforming. Troubled debt restructuring involves the granting of a concession to a borrower experiencing financial difficulty resulting in the modification of terms of the loan, such as changes in payment schedule or interest rate.
Accruing Interest On Nonrecurring Loan	$ 0	$ 0
Loans Classified As Troubled Debt Restructuring	0	0
Other Real Estate, Foreclosed Assets, and Repossessed Assets	1,322,000	1,322,000
Received From Nonaccrual Loan	4,115,000
Nonperforming Loans Nonaccrual	4,198,000
Nonaccrual Loan Charged Off	$ 83,000

Impaired loans consist primarily of nonaccrual loans, loans greater than 90 days past due and still accruing interest and troubled debt restructurings, both performing and nonperforming. Troubled debt restructuring involves the granting of a concession to a borrower experiencing financial difficulty resulting in the modification of terms of the loan, such as changes in payment schedule or interest rate.

Loans Classified As Troubled Debt Restructuring

0

Received From Nonaccrual Loan

4,115,000

Nonaccrual Loan Charged Off

$ 83,000