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Loans and the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Loans held-for-sale	$ 24,845	$ 78,005
Non Accrual Contractual Due	90 days
Loans Pledged as Collateral	$ 1,900	1,700
Charge offs	239	39,573	$ 538
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	5,600	500
Troubled debt restructurings	20,500	13,800	$ 85,900
Current Troubled debt restructurings	14,900	13,300
Debt Instrument, Interest Rate, Stated Percentage Rate Range			3.75%
Troubled debt restructurings medallions	$ 18,500
Number of loans	All 15 loans were accruing prior to modification, while 14 remained in accrual status post-modification.
Total, Recorded Investment	$ 84,664	30,991	$ 107,104
Commercial loans held-for-sale segment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Loans held-for-sale	$ 46,800	65,600
Loans held-for-sale, percentage	1.10%
Taxi medallion portfolio [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Loans held-for-sale	$ 46,800	102,100
Loans held-for-sale, percentage	1.10%
Total, Recorded Investment	$ 46,800
Union Center operations building [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Charge offs		36,700
Taxi medallion loans [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Charge offs		$ 1,100
Minimum [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Amortization Period For Interest			25 years
Debt Instrument, Interest Rate, Stated Percentage Rate Range			3.00%
Maximum [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Amortization Period For Interest			30 years
Debt Instrument, Interest Rate, Stated Percentage Rate Range			3.25%

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Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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