Loans and Allowance for Loan Losses (Details Textual) (USD $)	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Loans and Allowance for Loan Losses (Textual) [Abstract]
Loans previously sold and serviced	$ 616,000	$ 15,877,000
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]
Due days of accrual of interest on all loans	90 days
Originate loans with a loan-to-value	80.00%
Troubled debt restructurings	607,000,000	607,000,000
Loans sold with recourse	1,500,000	1,500,000
Residential mortgage [Member]
Loans and Allowance for Loan Losses (Textual) [Abstract]
Loans previously sold and serviced	73,300,000	28,300,000
Indirect auto loans [Member]
Loans and Allowance for Loan Losses (Textual) [Abstract]
Loans previously sold and serviced	$ 71,200,000	$ 28,300,000