Business Combinations (Details) (USD $)	1 Months Ended	12 Months Ended
	Jun. 30, 2009	Dec. 31, 2011
Business Combinations [Abstract]
Allowance for Loan and Lease Losses, Write-offs	$ 7,816,000
Goodwill	3,400,000
Noncash impairment charge		$ 1,500,000