Loans and Leases - Troubled Debt Restructured Loans with Payment Defaults (Details 12) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 Loan	Dec. 31, 2011 Loan
Accruing Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		2
Recorded investment		$ 189
Nonaccrual Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1
Recorded investment		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
Recorded investment		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
Recorded investment		31
Real estate-commercial real estate [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans		1
Recorded investment		$ 2,761