Loans and Allowance for Loan and Lease Losses (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012 Loans	Sep. 30, 2011 Loans	Sep. 30, 2012 Loans	Sep. 30, 2011 Loans
Troubled debt restructured loans which had payment defaults
Number of Defaults		3	2	3
Recorded Balance		$ 223	$ 123	$ 223
Commercial Real estate loans [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults
Recorded Balance
Residential Real estate loans [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults		3		3
Recorded Balance		223		223
Construction Real estate loans [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults
Recorded Balance
Commercial loans and leases [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults			2
Recorded Balance			123
Municipal loans [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults
Recorded Balance
Consumer loans [Member]
Troubled debt restructured loans which had payment defaults
Number of Defaults
Recorded Balance