Loans and Leases - Troubled Debt Restructured Loans with Payment Defaults (Details) (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
Accruing Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		2		2
Recorded investment		$ 189		$ 189
Non Accrual Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1		1
Recorded investment		2,761		2,761
Real estate-residential secured for personal purpose [Member] | Accruing Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1		1
Recorded investment		158		158
Real estate-home equity secured for personal purpose [Member] | Accruing Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1		1
Recorded investment		31		31
Real estate - commercial [Member] | Non Accrual Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1		1
Recorded investment		$ 2,761		$ 2,761