Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Selected Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Securities held-to-maturity, amortized cost	$ 73,523	$ 73,711
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	811,928	735,357
Interest Rate Swap [Member]
Interest Rate Swaps, Net Amount	627	2,401
Interest rate swaps	18,729	18,407
Collateralized Mortgage Backed Securities
Securities held-to-maturity, amortized cost	7,870
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	380,110	384,283
Reported Value Measurement [Member]
Cash and due from banks	176,747	151,754
Loans	6,904,176	6,934,769
FHLB-NY stock	38,779	45,842
Accrued interest receivable	46,836	45,048
Deposits	6,734,090	6,485,342
Borrowings	887,509	1,052,973
Accrued interest payable	7,520	10,034
Reported Value Measurement [Member] \| Interest Rate Swap [Member]
Interest Rate Swaps, Net Amount	65,072	74,856
Interest rate swaps	18,729	18,407
Reported Value Measurement [Member] \| Collateralized Mortgage Backed Securities
Securities held-to-maturity, amortized cost	7,870	7,875
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	380,110	384,283
Reported Value Measurement [Member] \| Other Debt Obligations
Securities held-to-maturity, amortized cost	65,653	65,836
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	431,818	351,074
Estimate of Fair Value Measurement [Member]
Cash and due from banks	176,747	151,754
Loans	6,580,759	6,651,795
FHLB-NY stock	38,779	45,842
Accrued interest receivable	46,836	45,048
Deposits	6,702,840	6,453,978
Borrowings	861,879	1,027,370
Accrued interest payable	7,520	10,034
Estimate of Fair Value Measurement [Member] \| Interest Rate Swap [Member]
Interest Rate Swaps, Net Amount	65,072	74,856
Interest rate swaps	18,729	18,407
Estimate of Fair Value Measurement [Member] \| Collateralized Mortgage Backed Securities
Securities held-to-maturity, amortized cost	7,137	6,989
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	380,110	384,283
Estimate of Fair Value Measurement [Member] \| Other Debt Obligations
Securities held-to-maturity, amortized cost	60,732	55,561
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	431,818	351,074
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	176,747	151,754
Deposits	4,853,830	4,959,004
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member] \| Other Debt Obligations
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	11,460	11,211
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
FHLB-NY stock	38,779	45,842
Accrued interest receivable	4,774	3,819
Deposits	1,849,010	1,494,974
Borrowings	813,762	976,863
Accrued interest payable	7,520	10,034
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Interest Rate Swaps, Net Amount	65,072	74,856
Interest rate swaps	18,729	18,407
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized Mortgage Backed Securities
Securities held-to-maturity, amortized cost	7,137	6,989
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	380,110	384,283
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member] \| Other Debt Obligations
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	418,913	338,347
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans	6,580,759	6,651,795
Accrued interest receivable	42,062	41,229
Borrowings	48,117	50,507
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Other Debt Obligations
Securities held-to-maturity, amortized cost	60,732	55,561
Securities available for sale, at fair value: (assets pledged of $193,558 and $172,235, respectively; $13,192 and $13,023 at fair value pursuant to the fair value option, respectively)	$ 1,445	$ 1,516

Fair value portion of accrued interest payable.

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Fair value portion of accrued interest receivable.

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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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Fair value portion 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.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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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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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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