Loans, Allowance for Loan Losses and Credit Quality (Details 3)	Sep. 30, 2012 score		Dec. 31, 2011 score
Residential Portfolio Segment [Member]
Weighted average FICO scores and the weighted average combined LTV Ratio
FICO Score (re-scored) (1)	727	[1]	731	[1]
Combined LTV (re-valued) (2)	67.00%	[2]	67.00%	[2]
Consumer Home Equity [Member]
Weighted average FICO scores and the weighted average combined LTV Ratio
FICO Score (re-scored) (1)	763	[1]	762	[1]
Combined LTV (re-valued) (2)	55.00%	[2]	55.00%	[2]

[1] The average FICO scores for September 30, 2012 are based upon rescores available from August 2012 and actual score data for loans booked between September 1 and September 30, 2012. The average FICO scores for December 31, 2011 are based upon rescores available from November 2011 and actual score data for loans booked between December 1 and December 31, 2011.

[2] The combined LTV ratios for September 30, 2012 are based upon updated automated valuations as of May 31, 2012. The combined LTV ratios for December 31, 2011 are based upon updated automated valuations as of November 30, 2011.