Loans Receivable and Allowance for Credit Losses - Schedule of Financing Receivable, Modified, Payment Performance (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 301,427		$ 387,869
Total nonaccrual loans included above	46,187		69,149
Commitment to lend	27,000	$ 14,000
Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	231,056		376,275
Total nonaccrual loans included above	3,034		63,620
30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	27,684		6,204
Total nonaccrual loans included above	466		139
90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	42,687		5,390
Total nonaccrual loans included above	42,687		5,390
Commercial Lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	253,313		358,192
Commercial Lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	205,644		358,192
Commercial Lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	13,413		0
Commercial Lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	34,256		0
Commercial Lending | C&I
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	158,148		165,093
Commercial Lending | C&I | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	133,100		165,093
Commercial Lending | C&I | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	12,216		0
Commercial Lending | C&I | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	12,832		0
Commercial Lending | CRE
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	75,515		162,915
Commercial Lending | CRE | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	72,544		162,915
Commercial Lending | CRE | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,197		0
Commercial Lending | CRE | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,774		0
Commercial Lending | Multifamily residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			13,677
Commercial Lending | Multifamily residential | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			13,677
Commercial Lending | Multifamily residential | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			0
Commercial Lending | Multifamily residential | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			0
Commercial Lending | Construction and land
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	19,650		16,507
Commercial Lending | Construction and land | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0		16,507
Commercial Lending | Construction and land | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0		0
Commercial Lending | Construction and land | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	19,650		0
Consumer Lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	48,114		29,677
Consumer Lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	25,412		18,083
Consumer Lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	14,271		6,204
Consumer Lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	8,431		5,390
Consumer Lending | Single-family residential (“SFR”)
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	32,764		17,179
Consumer Lending | Single-family residential (“SFR”) | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	15,380		11,646
Consumer Lending | Single-family residential (“SFR”) | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	11,288		3,196
Consumer Lending | Single-family residential (“SFR”) | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	6,096		2,337
Consumer Lending | Home equity loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	15,350		12,498
Consumer Lending | Home equity loans | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	10,032		6,437
Consumer Lending | Home equity loans | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	2,983		3,008
Consumer Lending | Home equity loans | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 2,335		$ 3,053