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Loans and the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Loans held-for-sale		$ 24,845
Non Accrual Contractual Due	90 days
Loans Pledged as Collateral	$ 2,300	1,900
Charge offs	18,011	239	$ 39,573
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	23,300	5,600
Troubled debt restructurings	34,500	20,500
Current Troubled debt restructurings	11,200	14,900	13,300
Specific allowance	3	$ 39
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.
Taxi medallion loans [Member]
Financing Receivable, Impaired [Line Items]
Charge offs	$ 1,700		36,700
Troubled debt restructurings	$ 11,200
Number of loans	27 taxi medallion loans
Commercial loans held-for-sale segment [Member]
Financing Receivable, Impaired [Line Items]
Loans held-for-sale			$ 65,600

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Current Troubled debt restructurings.

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Number of loans.

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Troubled debt restructurings medallions.

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Amount of direct write-downs of financing receivables charged against the allowance.

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-Section 50
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

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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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The face amount of loans that will be sold to other entities.

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For a debtor, the gain (loss) recognized on the transfer of assets, after the impact of income tax expense or benefit, arising from the difference between the book value of the assets transferred before the restructuring and the fair value of the assets transferred.

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