Loans and Leases (Details Textual) (USD $)	3 Months Ended	12 Months Ended			3 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2011 Real Estate - Commercial [Member]	Dec. 31, 2012 Real estate-commercial [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Minimum [Member]
Loan and Leases (Additional Textual) [Abstract]
Amount of loan relationship with risk ratings of grade 1-5 reviewed quarterly								$ 2,500,000
Amount of loan relationship with risk ratings of grade 1-5 reviewed annually							2,500,000	500,000
Amount of loan relationship with risk ratings of grade six reviewed annually							2,000,000	500,000
Amount of loan relationship with risk rates of grade six reviewed quarterly								2,000,000
Loan-to-value ratio for residential mortgage loans without private mortgage insurance							80.00%
Combined loan-to-value ratio for home equity loans without private mortgage insurance							80.00%
Combined loan to value ratio for home equity loans without private mortgage insurance for corporations strongest profile borrower							85.00%
Aging period due of reviewing loans rated 1 through 6								60 days
Interest income recognized on accruing troubled debt restructured loans		485,000	196,000	97,000
Amount of loans charged off prior to being transferred to loans held for sale						1,300,000
Reserve for off-balance sheet credits	119,000	119,000	108,000
Nonaccrual troubled debt restructured loan subsequent default foreclosure					2,800,000
Nonaccrual troubled debt restructured loan subsequent default charge off					1,000,000
Nonaccrual troubled debt restructured loan subsequent default transfer to other real estate owned					1,800,000
Loan and Leases (Textual) [Abstract]
Minimum aging of past due loans and leases current		90 days	90 days
Nonaccrual troubled debt restructured loans and lease modifications	579,000	579,000	8,600,000
Amount of nonaccrual troubled debt restructured loans sold	572,000
Troubled debt restructured maximum modification period on short term basis		up to one year
Troubled debt restructured loan past due period		Less than Ninety days
Amount of Troubled Debt Restructured Loans subsequently paid off	3,000,000	3,000,000
Accruing troubled debt restructured loans transferred to nonaccrual status			189,000
Reserve for uncollected interest		$ 15,000	$ 0