Derivative Financial Instruments - Fair Value of Hedged Items (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Notional amount, Assets	$ 2,013,549	$ 1,084,955
Notional amount, Liability	239,974	281,348
Basis adjustments	10,639
Designated as Hedging Instrument [Member] | Portfolio Layer Hedges on Closed Portfolio of Loans [Member]
Notional amount, Assets	2,615,651
Cumulative amount, Hedged Liabilities	(10,639)
Basis adjustments	10,600
Designated as Hedging Instrument [Member] | Portfolio Layer Hedges on Closed Portfolio of Securities Available for Sale [Member]
Notional amount, Assets	273,313
Cumulative amount, Hedged Liabilities	(7,721)
Basis adjustments	7,700
Designated as Hedging Instrument [Member] | Portfolio Layer Hedges on Closed Portfolio [Member]
Notional amount, Assets	2,888,964
Cumulative amount, Hedged Liabilities	(18,360)
Designated as Hedging Instrument [Member] | Loans Receivable [Member]
Notional amount, Assets	220,543	249,966
Cumulative amount, Hedged Liabilities	(28,337)	(25,922)
Multi-family Residential Portfolio Segment [Member] | Designated as Hedging Instrument [Member]
Notional amount, Assets	77,216	82,613
Cumulative amount, Hedged Liabilities	(13,979)	(10,480)
Commercial Real Estate [Member] | Designated as Hedging Instrument [Member]
Notional amount, Assets	143,327	167,353
Cumulative amount, Hedged Liabilities	$ (14,358)	$ (15,442)