Loans Receivable Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Loans Receivable Held for Sale
Loans receivable held for sale	$ 81,985	$ 81,985	$ 19,481
Payments for Origination of Mortgage Loans Held-for-sale		31,479
Transfer of loan held in portfolio to held-for-sale		90,183
Loan sales	46,800	59,000
Multi-family
Loans Receivable Held for Sale
Loans receivable held for sale	82,000	82,000	$ 19,500
Payments for Origination of Mortgage Loans Held-for-sale	18,900	$ 31,500
Transfer of loan held in portfolio to held-for-sale	$ 90,200