Loans Receivable and Allowance for Loan Losses (Details 3)	6 Months Ended
	Jun. 30, 2013
Twelve months
Loans receivable and allowance for loan losses
Historical loss experience analysis, period of time	12 months
Fifteen months
Loans receivable and allowance for loan losses
Historical loss experience analysis, period of time	15 months
Eighteen months
Loans receivable and allowance for loan losses
Historical loss experience analysis, period of time	18 months
Twenty-four months
Loans receivable and allowance for loan losses
Historical loss experience analysis, period of time	24 months
More than Two Years
Loans receivable and allowance for loan losses
Historical loss experience analysis, period of time	2 years
Residential
Loans receivable and allowance for loan losses
Period after which loans are individually evaluated for impairment	180 days