Loans Receivable and Allowance for Credit Losses - Schedule of Financing Receivable, Modified, Payment Performance (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 485,869		$ 163,213
Commitment to lend	14,000	$ 10,000
Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	477,510		128,608
30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,889		18,821
90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	4,470		15,784
Other consumer
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			3,000
Other consumer | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			0
Other consumer | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			3,000
Other consumer | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated			0
Commercial lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	446,095		126,752
Commercial lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	445,111		110,076
Commercial lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	94		8,848
Commercial lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	890		7,828
Commercial lending | C&I
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	218,379		78,783
Commercial lending | C&I | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	217,395		62,107
Commercial lending | C&I | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	94		8,848
Commercial lending | C&I | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	890		7,828
Commercial lending | CRE
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	210,658		47,969
Commercial lending | CRE | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	210,658		47,969
Commercial lending | CRE | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0		0
Commercial lending | CRE | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0		0
Commercial lending | Multifamily residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	276
Commercial lending | Multifamily residential | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	276
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	16,782
Commercial lending | Construction and land | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	16,782
Commercial lending | Construction and land | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Commercial lending | Construction and land | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Consumer lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	39,774		36,461
Consumer lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	32,399		18,532
Consumer lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,795		9,973
Consumer lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,580		7,956
Consumer lending | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	26,805		19,533
Consumer lending | Single-family residential | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	22,866		9,610
Consumer lending | Single-family residential | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	2,201		3,237
Consumer lending | Single-family residential | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,738		6,686
Consumer lending | HELOCs
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	12,969		13,928
Consumer lending | HELOCs | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	9,533		8,922
Consumer lending | HELOCs | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,594		3,736
Consumer lending | HELOCs | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 1,842		$ 1,270