Loans Held-for-Sale (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2016 USD ($) loan	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 12, 2014 USD ($)	Jul. 31, 2014 USD ($)
Mortgage Loans on Real Estate [Line Items]
Loans held-for-sale, net			$ 11,584	$ 8,960
Loan charge-off in connection with designation of pool of loans as held-for-sale			10,191	8,270	$ 29,589
Credit to the provision for loan losses			9,151	12,072	9,469
Net gain (loss) on sales of loans			2,142	2,021	1,763
Non-performing loans held-for-sale, net
Mortgage Loans on Real Estate [Line Items]
Loans held-for-sale, net			$ 143	1,600
Number of non-performing multi-family mortgage loans held-for-sale | loan			1
Sale of delinquent and non-performing mortgage loans, net of charge-offs			$ 2,900	7,500	4,900
Charge-offs/recoveries			672	1,100	517
Net gain (loss) on sales of loans			(140)	$ (23)	$ (892)
Net lower of cost or market write-downs			$ 68
Non-performing loans held-for-sale, net | Residential
Mortgage Loans on Real Estate [Line Items]
Loan charge-off in connection with designation of pool of loans as held-for-sale		$ 8,700
Non performing residential mortgage loans transferred to held-for-sale		195,000
Non performing residential mortgage loans held-for-sale		186,300
Credit to the provision for loan losses		$ 5,700
Carrying value, loans sold						$ 4,000	$ 173,700
Loss on sales of loans, net	$ 920