Investment Securities - Securities Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2026		Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,857,903	[1]	$ 2,646,414	[2]
Allowance for Credit Loss	775		775
Net Carrying Amount	2,857,128	[1]	2,645,639	[2]
Gross Unrealized Gains	2,639		5,309
Gross Unrealized Losses	(203,435)		(196,890)
Fair Value	2,656,332	[1]	2,454,058	[2]
Interest Receivable	12,300		11,400
Agency residential MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	951,650		972,161
Allowance for Credit Loss	0		0
Net Carrying Amount	951,650		972,161
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(139,989)		(138,076)
Fair Value	811,661		834,085
Agency commercial MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	52,030		52,022
Allowance for Credit Loss	0
Net Carrying Amount	52,030
Gross Unrealized Gains	0		44
Gross Unrealized Losses	(1,049)		(1,100)
Fair Value	50,981		50,966
Agency residential CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,122,858		883,067
Allowance for Credit Loss	0		0
Net Carrying Amount	1,122,858		883,067
Gross Unrealized Gains	1,423		3,857
Gross Unrealized Losses	(20,098)		(15,300)
Fair Value	1,104,183		871,624
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	246,475		257,236
Allowance for Credit Loss	775		775
Net Carrying Amount	245,700		256,461
Gross Unrealized Gains	880		576
Gross Unrealized Losses	(14,622)		(15,441)
Fair Value	231,958		241,596
Private label residential CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	259,984		254,787
Allowance for Credit Loss	0		0
Net Carrying Amount	259,984		254,787
Gross Unrealized Gains	157		522
Gross Unrealized Losses	(26,957)		(26,334)
Fair Value	233,184		228,975
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	200,306		200,519
Allowance for Credit Loss	0		0
Net Carrying Amount	200,306		200,519
Gross Unrealized Gains	155		303
Gross Unrealized Losses	(87)		0
Fair Value	200,374		200,822
Private label commercial MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,742		9,746
Allowance for Credit Loss	0		0
Net Carrying Amount	8,742		9,746
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(472)		(467)
Fair Value	8,270		9,279
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	12,637		13,242
Allowance for Credit Loss	0		0
Net Carrying Amount	12,637		13,242
Gross Unrealized Gains	24		7
Gross Unrealized Losses	0		0
Fair Value	12,661		13,249
SBA securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,221		3,634
Allowance for Credit Loss	0		0
Net Carrying Amount	3,221		3,634
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(161)		(172)
Fair Value	$ 3,060		3,462
Government agency and government-sponsored enterprise pass through securities
Debt Securities, Available-for-sale [Line Items]
Allowance for Credit Loss			0
Net Carrying Amount			$ 52,022

[1] Excludes accrued interest receivable of $12.3 million at March 31, 2026 which is recorded in "Other assets" on the consolidated balance sheets.

[2] Excludes accrued interest receivable of $11.4 million at December 31, 2025 which is recorded in "Other assets" on the consolidated balance sheets.