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Borrowing Arrangements - Summary of Borrowings Available to the Company from Institutions (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Debt Disclosure [Line Items]
Amount of borrowings	$ 592,224
Federal Home Loan Bank—San Francisco
Debt Disclosure [Line Items]
Amount of borrowings	350,585
Federal Reserve Bank
Debt Disclosure [Line Items]
Amount of borrowings	141,639
Pacific Coast Bankers Bank
Debt Disclosure [Line Items]
Amount of borrowings	50,000
Zions Bank
Debt Disclosure [Line Items]
Amount of borrowings	25,000
First Horizon Bank
Debt Disclosure [Line Items]
Amount of borrowings	$ 25,000

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- Definition

Line items represent financial concepts related to debt.

+ References

No definition available.

+ Details

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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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