Derivative Instruments and Hedge Activities - Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Derivatives Fair Value [Line Items]
Notional Amount	$ 1,635,312	$ 1,703,495
Other Assets	22,623	27,530
Other Liabilities	(11,373)	(13,642)
Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	500,000
Other Assets	9,819
Other Liabilities	0
Fair Value Hedges
Derivatives Fair Value [Line Items]
Notional Amount	100,000
Other Assets	1,480
Other Liabilities	0
Other Interest Rate Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	1,013,279
Other Assets	11,312
Other Liabilities	(11,367)
Other Interest Rate Derivatives \| Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	300,000
Derivatives Designated as Hedging Instruments \| Interest Rate Swap \| Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	500,000	650,000
Other Assets	9,819	14,053
Other Liabilities	0	0
Derivatives Designated as Hedging Instruments \| Interest Rate Swap \| Fair Value Hedges
Derivatives Fair Value [Line Items]
Notional Amount	100,000	100,000
Other Assets	1,480	0
Other Liabilities	0	(61)
Derivatives Not Designated As Hedging Instruments \| Other Credit Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	22,033	15,491
Other Assets	12	7
Other Liabilities	(6)	(12)
Derivatives Not Designated As Hedging Instruments \| Other Interest Rate Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	1,013,279	938,004
Other Assets	11,312	13,470
Other Liabilities	$ (11,367)	$ (13,569)