Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Selected Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	$ 72,462	$ 72,923
Securities available for sale	1,256,343	954,164
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	6,881	20,508
Interest rate swaps	20,235	28,401
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks	210,723	172,157
Loans	6,821,943	6,906,950
FHLB-NY stock	24,845	31,066
Accrued interest receivable	61,449	59,018
Deposits	7,253,207	6,815,261
Borrowed Funds	671,474	841,281
Accrued interest payable	12,430	12,111
Reported Value Measurement [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	75,166	69,013
Interest rate swaps		28,401
Reported Value Measurement [Member] | Collateralized Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	7,850	7,855
Securities available for sale	509,527	354,344
Reported Value Measurement [Member] | Total Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	65,696	66,155
Securities available for sale	667,156	520,409
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks	210,723	172,157
Loans	6,419,599	6,512,841
FHLB-NY stock	24,845	31,066
Accrued interest receivable	61,449	59,018
Deposits	7,221,342	6,778,657
Borrowed Funds	624,058	801,156
Accrued interest payable	12,430	12,111
Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	75,166	69,013
Interest rate swaps	20,235	28,401
Estimate of Fair Value Measurement [Member] | Collateralized Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	6,944	7,058
Securities available for sale	509,527	354,344
Estimate of Fair Value Measurement [Member] | Total Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	56,856	58,697
Securities available for sale	667,156	520,409
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks	210,723	172,157
Deposits	4,724,112	4,503,971
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Total Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	11,618	11,660
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FHLB-NY stock	24,845	31,066
Accrued interest receivable	61,449	59,018
Deposits	2,497,230	2,274,686
Borrowed Funds	575,436	753,306
Accrued interest payable	12,430	12,111
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	75,166	69,013
Interest rate swaps	20,235	28,401
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	6,944	7,058
Securities available for sale	509,527	354,344
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Total Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	654,078	507,312
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	6,419,599	6,512,841
Borrowed Funds	48,622	47,850
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Total Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held-to-maturity	56,856	58,697
Securities available for sale	$ 1,460	$ 1,437