Loans and the Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2015
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Non Accrual Contractual Due	90 days
Loans Pledged as Collateral	$ 1,600,000	$ 1,600,000
Loans performing under the restructured terms	95,100	85,900
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	1,400	700
Troubled debt restructurings	96,500	86,600
Financing Receivable, Collectively Evaluated for Impairment	3,139,446	2,985,509
Allowance for Loan and Lease Losses Period Increase Decrease Due to Trouble Debt Restructuring	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage Rate Range	5.75%
Debt Instrument, Interest Rate, Increase (Decrease)	3.00%
Specific allocations associated with taxi medallion, fair value	$ 6,000	4,500
Modified specific allocations associated with taxi medallion, fair value	8,000
Valuation per Medallion Amount	775
Increase in allowance for loan and lease losses	$ 45
Minimum [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range	1.30%
Maximum [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range	1.60%
Acquired Loans [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Financing Receivable, Collectively Evaluated for Impairment	$ 824,000	867,000
Real Estate Loan [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Financing Receivable, Collectively Evaluated for Impairment	$ 661,000	$ 672,000

Allowance for loan and lease losses period increase decrease due to trouble debt restructuring.

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Loans and the allowance for loan losses details line items.

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Loans performing under the restructured terms

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Modified specific allocations associated with taxi medallion, fair value.

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Non accrual contractual due.

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Specific allocations associated with taxi medallion, fair value.

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Valuation per Medallion Amount.

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 60
-Section 50
-Paragraph 1
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