Financial Assets [Abstract]

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- Definition

Financial Liabilities [Abstract]

+ References

No definition available.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of interest-bearing domestic certificate of deposit liabilities.

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Amount of interest-bearing domestic deposit liabilities classified as other. Excludes certificates of deposit.

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- Definition

Amount after allowance and 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 and loans held for sale.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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Fair Value Measurements (Financial Instruments) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Cash and cash equivalents	$ 149,124	$ 190,834	$ 148,783	$ 144,297
Available for sale debt securities, at fair value	1,042,320	1,037,154
Investment securities held to maturity, fair value	469,861	485,039
FHLBNY stock	71,909	81,184
Equity securities, at fair value	722	658
Loans, net of allowance for loan losses	7,174,463	7,265,523
Financial liabilities:
Certificates of deposit	677,858	634,809
Total deposits	6,719,741	6,714,166
Borrowings	1,529,914	1,742,514
Derivative liabilities	566
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	149,124	190,834
Available for sale debt securities, at fair value	0	19,005
Investment securities held to maturity, fair value	4,828	4,221
FHLBNY stock	71,909	81,184
Equity securities, at fair value	722	658
Loans, net of allowance for loan losses	0	0
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	6,041,883	6,079,357
Certificates of deposit	0	0
Total deposits	6,041,883	6,079,357
Borrowings	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Cash and cash equivalents	0	0
Available for sale debt securities, at fair value	1,042,320	1,018,149
Investment securities held to maturity, fair value	465,033	480,818
FHLBNY stock	0	0
Equity securities, at fair value	0	0
Loans, net of allowance for loan losses	0	0
Derivative assets	18,111	7,219
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	674,025	632,744
Total deposits	674,025	632,744
Borrowings	1,514,148	1,739,102
Derivative liabilities	16,022	6,315
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Cash and cash equivalents	0	0
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
FHLBNY stock	0	0
Equity securities, at fair value	0	0
Loans, net of allowance for loan losses	7,019,068	7,217,705
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	0	0
Total deposits	0	0
Borrowings	0	0
Derivative liabilities	0	0
Carrying Value [Member]
Financial assets:
Cash and cash equivalents	149,124	190,834
Available for sale debt securities, at fair value	1,042,320	1,037,154
Investment securities held to maturity, fair value	474,092	477,652
FHLBNY stock	71,909	81,184
Equity securities, at fair value	722	658
Loans, net of allowance for loan losses	7,174,463	7,265,523
Derivative assets	18,111	7,219
Financial liabilities:
Deposits other than certificates of deposits	6,041,883	6,079,357
Certificates of deposit	677,858	634,809
Total deposits	6,719,741	6,714,166
Borrowings	1,529,914	1,742,514
Derivative liabilities	16,022	6,315
Fair Value [Member]
Financial assets:
Cash and cash equivalents	149,124	190,834
Available for sale debt securities, at fair value	1,042,320	1,037,154
Investment securities held to maturity, fair value	469,861	485,039
FHLBNY stock	71,909	81,184
Equity securities, at fair value	722	658
Loans, net of allowance for loan losses	7,019,068	7,217,705
Derivative assets	18,111	7,219
Financial liabilities:
Deposits other than certificates of deposits	6,041,883	6,079,357
Certificates of deposit	674,025	632,744
Total deposits	6,715,908	6,712,101
Borrowings	1,514,148	1,739,102
Derivative liabilities	16,022	6,315
Agency Obligations [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value		19,005
Investment securities held to maturity, fair value	4,828	4,221
Agency Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value		0
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value		0
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] \| Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value		19,005
Investment securities held to maturity, fair value	4,988	4,308
Agency Obligations [Member] \| Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value		19,005
Investment securities held to maturity, fair value	4,828	4,221
Mortgage-Backed Securities [Member]
Financial assets:
Available for sale debt securities, at fair value	1,014,171	988,367
Investment securities held to maturity, fair value	214	396
Mortgage-Backed Securities [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	1,014,171	988,367
Investment securities held to maturity, fair value	214	396
Mortgage-Backed Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] \| Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	1,014,171	988,367
Investment securities held to maturity, fair value	207	382
Mortgage-Backed Securities [Member] \| Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	1,014,171	988,367
Investment securities held to maturity, fair value	214	396
State And Municipal Obligations [Member]
Financial assets:
Available for sale debt securities, at fair value	3,285	3,388
Investment securities held to maturity, fair value	455,086	470,484
State And Municipal Obligations [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	3,285	3,388
Investment securities held to maturity, fair value	455,086	470,484
State And Municipal Obligations [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] \| Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	3,285	3,388
Investment securities held to maturity, fair value	458,958	462,942
State And Municipal Obligations [Member] \| Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	3,285	3,388
Investment securities held to maturity, fair value	455,086	470,484
Corporate Obligations [Member]
Financial assets:
Available for sale debt securities, at fair value	24,864	26,394
Investment securities held to maturity, fair value	9,733	9,938
Corporate Obligations [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	24,864	26,394
Investment securities held to maturity, fair value	9,733	9,938
Corporate Obligations [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] \| Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	24,864	26,394
Investment securities held to maturity, fair value	9,939	10,020
Corporate Obligations [Member] \| Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	24,864	26,394
Investment securities held to maturity, fair value	$ 9,733	$ 9,938