Loans Receivable and Allowance for Credit Losses - Schedule of Financing Receivable, Modified, Payment Performance (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 163,213		$ 122,678
Commitment to lend	4,000	$ 4,000
Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	128,608		113,850
30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	18,821		1,931
90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	15,784		6,897
Commercial lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	126,752		111,616
Commercial lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	110,076		105,184
Commercial lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	8,848		0
Commercial lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	7,828		6,432
Commercial lending | C&I
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	78,783		64,913
Commercial lending | C&I | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	62,107		58,481
Commercial lending | C&I | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	8,848		0
Commercial lending | C&I | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	7,828		6,432
Commercial lending | CRE
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	47,969		46,703
Commercial lending | CRE | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	47,969		46,703
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
Consumer lending
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	36,461		11,062
Consumer lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	18,532		8,666
Consumer lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	9,973		1,931
Consumer lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	7,956		465
Consumer lending | Single-family residential
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	19,533		9,085
Consumer lending | Single-family residential | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	9,610		7,430
Consumer lending | Single-family residential | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,237		1,190
Consumer lending | Single-family residential | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	6,686		465
Consumer lending | HELOCs
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	13,928		1,977
Consumer lending | HELOCs | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	8,922		1,236
Consumer lending | HELOCs | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,736		741
Consumer lending | HELOCs | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	1,270		$ 0
Consumer lending | Other consumer
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,000
Consumer lending | Other consumer | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	0
Consumer lending | Other consumer | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	3,000
Consumer lending | Other consumer | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing receivable, modified, accumulated	$ 0