Loans Held-for-Sale (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Loans held-for-sale
Loans held-for-sale, net	$ 29,283,000		$ 29,283,000		$ 76,306,000
Mortgage loans held-for-sale | Low end of the range
Loans held-for-sale
Mortgage loan, original term			15 years
Mortgage loans held-for-sale | High end of the range
Loans held-for-sale
Mortgage loan, original term			30 years
Non-performing loans held-for-sale, net
Loans held-for-sale
Loans held-for-sale, net	3,600,000		3,600,000		3,900,000
Sale of delinquent and non-performing mortgage loans, net of charge-offs, amount			14,800,000	18,500,000
Charge-offs on delinquent and non-performing mortgage loans sold			3,900,000	10,000,000
Net gain (loss) on sales of loans	$ (76,000)	$ 329,000	$ 62,000	$ 1,300,000