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Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Selected Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Securities held-to-maturity, amortized cost | $ 57,868 | $ 57,832
Securities available for sale, fair value | 777,236 | 647,974
Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 10,683 | 1,319
Interest rate swaps | 3,544 | (2,629)
Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 7,894 | 7,914
Securities available for sale, fair value | 572,184 | 404,460
Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 49,974 | 49,918
Securities available for sale, fair value | 205,052 | 243,514
Reported Value Measurement [Member] |  |
Cash and due from banks | 81,723 | 157,388
Loans | 6,638,105 | 6,704,674
FHLB-NY stock | 35,937 | 43,439
Accrued interest receivable | 38,698 | 44,041
Deposits | 6,385,445 | 6,136,355
Borrowings | 815,544 | 1,020,895
Accrued interest payable | 4,777 | 4,755
Reported Value Measurement [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 10,683 | 1,319
Interest rate swaps | 25,071 | 60,987
Reported Value Measurement [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 7,894 | 7,914
Securities available for sale, fair value | 572,184 | 404,460
Reported Value Measurement [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 49,974 | 49,918
Securities available for sale, fair value | 205,052 | 243,514
Estimate of Fair Value Measurement [Member] |  |
Cash and due from banks | 81,723 | 157,388
Loans | 6,687,125 | 6,793,985
FHLB-NY stock | 35,937 | 43,439
Accrued interest receivable | 38,698 | 44,041
Deposits | 6,385,276 | 6,141,775
Borrowings | 816,012 | 1,017,573
Accrued interest payable | 4,777 | 4,755
Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 10,683 | 1,319
Interest rate swaps | 25,071 | 60,987
Estimate of Fair Value Measurement [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 8,667 | 8,991
Securities available for sale, fair value | 572,184 | 404,460
Estimate of Fair Value Measurement [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 53,362 | 54,538
Securities available for sale, fair value | 205,052 | 243,514
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and due from banks | 81,723 | 157,388
Accrued interest receivable |  | 2
Deposits | 5,438,870 | 4,997,994
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Other Debt Obligations [Member] |  |
Securities available for sale, fair value | 12,485 | 12,703
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
FHLB-NY stock | 35,937 | 43,439
Accrued interest receivable | 1,574 | 1,389
Deposits | 946,406 | 1,143,781
Borrowings | 759,540 | 974,437
Accrued interest payable | 4,777 | 4,755
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Interest Rate Swaps, Net Amount | 10,683 | 1,319
Interest rate swaps | 25,071 | 60,987
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member] |  |
Securities held-to-maturity, amortized cost | 8,667 | 8,991
Securities available for sale, fair value | 572,184 | 404,460
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Other Debt Obligations [Member] |  |
Securities available for sale, fair value | 190,872 | 229,516
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Loans | 6,687,125 | 6,793,985
Accrued interest receivable | 37,124 | 42,650
Borrowings | 56,472 | 43,136
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Other Debt Obligations [Member] |  |
Securities held-to-maturity, amortized cost | 53,362 | 54,538
Securities available for sale, fair value | $ 1,695 | $ 1,295

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