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Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Selected Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Securities held-to-maturity, amortized cost | $ 73,912 | $ 57,868
Securities available for sale, fair value | 819,861 | 777,236
Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 32,775 | 10,683
Interest rate swaps | 18,698 | 3,544
Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 7,880 | 7,894
Securities available for sale, fair value | 468,366 | 572,184
Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 66,032 | 49,974
Securities available for sale, fair value | 351,495 | 205,052
Reported Value Measurement [Member] |  |
Cash and due from banks | 164,693 | 81,723
Loans | 6,956,674 | 6,638,105
FHLB-NY stock | 62,489 | 35,937
Accrued interest receivable | 42,571 | 38,698
Deposits | 6,125,305 | 6,385,445
Borrowings | 1,572,830 | 815,544
Accrued interest payable | 8,628 | 4,777
Reported Value Measurement [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 83,280 | 10,683
Interest rate swaps | 18,698 | 25,071
Reported Value Measurement [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 7,880 | 7,894
Securities available for sale, fair value | 468,366 | 572,184
Reported Value Measurement [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 66,032 | 49,974
Securities available for sale, fair value | 351,495 | 205,052
Estimate of Fair Value Measurement [Member] |  |
Cash and due from banks | 164,693 | 81,723
Loans | 6,794,125 | 6,687,125
FHLB-NY stock | 62,489 | 35,937
Accrued interest receivable | 42,571 | 38,698
Deposits | 6,092,158 | 6,385,276
Borrowings | 1,547,433 | 816,012
Accrued interest payable | 8,628 | 4,777
Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 83,280 | 10,683
Interest rate swaps | 18,698 | 25,071
Estimate of Fair Value Measurement [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 6,986 | 8,667
Securities available for sale, fair value | 468,366 | 572,184
Estimate of Fair Value Measurement [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 52,727 | 53,362
Securities available for sale, fair value | 351,495 | 205,052
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and due from banks | 164,693 | 81,723
Deposits | 5,089,198 | 5,438,870
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Other Debt Obligations [Member] |  |
Securities available for sale, fair value | 11,131 | 12,485
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
FHLB-NY stock | 62,489 | 35,937
Accrued interest receivable | 3,093 | 1,574
Deposits | 1,002,960 | 946,406
Borrowings | 1,497,681 | 759,540
Accrued interest payable | 8,628 | 4,777
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 83,280 | 10,683
Interest rate swaps | 18,698 | 25,071
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 6,986 | 8,667
Securities available for sale, fair value | 468,366 | 572,184
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Other Debt Obligations [Member] |  |
Securities available for sale, fair value | 338,870 | 190,872
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Loans | 6,794,125 | 6,687,125
Accrued interest receivable | 39,478 | 37,124
Borrowings | 49,752 | 56,472
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 52,727 | 53,362
Securities available for sale, fair value | $ 1,494 | $ 1,695

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