Borrowing Arrangements - Schedule of Borrowings Available to the Company from Institutions (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	$ 705,399
Federal Reserve Bank
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	207,782
Pacific Coast Bankers Bank
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	50,000
Zions Bank
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	25,000
First Horizon Bank
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	25,000
FHLB
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount of borrowings	$ 397,617

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant