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Loans Receivable, Net - Schedule of Loans Receivable, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	$ 10,185,087		$ 10,118,072
Deferred origination costs, net of fees	13,960		10,964
Allowance for loan credit losses	(79,266)	$ (78,798)	(73,607)	$ (68,839)	$ (67,173)	$ (67,137)
Total loans receivable, net	10,119,781		10,055,429
Commercial:
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	6,845,035		6,837,847
Commercial: \| Commercial real estate – investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	5,068,125		5,287,683
Commercial: \| Total commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	1,776,910		1,550,164
Commercial: \| Commercial and industrial – real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	914,406		902,219
Allowance for loan credit losses	(3,934)	(4,102)	(3,817)	(3,931)	(4,251)	(4,354)
Commercial: \| Commercial and industrial – non-real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	862,504		647,945
Allowance for loan credit losses	(14,822)	(12,837)	(10,471)	(7,915)	(7,641)	(6,867)
Consumer:
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	3,340,052		3,280,225
Allowance for loan credit losses	(1,014)	$ (1,102)	(952)	$ (1,307)	$ (1,187)	$ (988)
Consumer: \| Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	3,119,232		3,049,763
Consumer: \| Home equity loans and lines and other consumer (“other consumer”)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans receivable	$ 220,820		$ 230,462