Represents loss emergence period, a period used for calculation allowance for loan and lease losses.

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- Definition

The fair value of each individual taxi medallion.

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No definition available.

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The fair value of a collateral dependent loan expressed as a percentage of appraised or estimated value of collateral.

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No definition available.

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- Definition

Represents the amount of modified TDR sold during the period.

+ References

No definition available.

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Represents the amount of loss on sale of real estate classified as troubled debt restructuring (TDR).

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No definition available.

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Represents number of assets foreclosed on during the period.

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No definition available.

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- Definition

Represents number of real estate which is classified as troubled debt restructuring (TDR) sold during the period.

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No definition available.

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- Definition

The percentage of a specific loan portfolio to total loans.

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No definition available.

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Number of TDR loans transferred to non-performing loans during the period.

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No definition available.

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Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Carrying amount as of the balance sheet date of assets other than real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance.

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Note 5 - Loans (Details Textual)	3 Months Ended		6 Months Ended
Note 5 - Loans (Details Textual)	Jun. 30, 2018 USD ($)	Jun. 30, 2017	Jun. 30, 2018 USD ($)	Jun. 30, 2017	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Fair Value of Collateral Dependent Loans as a Percentage of Appraised or Estimated Value of Collateral			85.00%
Loans and Leases Receivable, Net of Deferred Income, Total	$ 5,318,160,000		$ 5,318,160,000			$ 5,160,236,000
Allowance for Loan and Lease Losses, Loss Emergence Period			1 year 120 days
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 0		$ 0
Financing Receivable, Modifications, Number of Contracts	0		0	5
Financing Receivable, Modifications, Subsequent Default, Number of Contracts			0
TDR Loans Transferred to Non-performing, Number of Contracts	0	0		0
Extension of Credit [Member]
Commitments and Contingencies	$ 25,200,000		$ 25,200,000
Extension of Lines of Credit [Member]
Commitments and Contingencies	300,800,000		300,800,000
Taxi Medallion Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	$ 6,225,000		$ 6,225,000			6,834,000
Percent of Loan Portfolio to Total Loans	0.12%		0.12%
Number of Assets Foreclosed on During the Period			1
Taxi Medallion Portfolio Segment [Member] \| Other Assets [Member]
Other Repossessed Assets	$ 35,000,000,000		$ 35,000,000,000
Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses, Loss Emergence Period			1 year 120 days
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses, Loss Emergence Period			1 year 211 days
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	1,471,894,000		$ 1,471,894,000			$ 1,368,112,000
Number of Real Estate Classified as Troubled Debt Restructuring Sold			1
Financing Receivable, Modification, Sold During Period			$ 1,800,000
Loss on Sale of Real Estate Classified as Troubled Debt Restructuring			300,000
Chicago Taxi Medallion [Member] \| Taxi Medallion Portfolio Segment [Member]
Fair Value Per Taxi Medallion	25,000		25,000		$ 60,000
Loans and Leases Receivable, Net of Deferred Income, Total	$ 200,000		$ 200,000