Restricted Cash Balances	12 Months Ended
Dec. 31, 2023
Restricted Cash Balances [Abstract]
Restricted Cash Balances	NOTE 3. RESTRICTED CASH The Company is required to maintain reserve balances with the FRBSF. Such reserve requirements are based on a percentage of deposit liabilities and may be satisfied by cash on hand. There were no average reserves required to be held at the FRBSF for the year ended December 31, 2023 and 2022. As of December 31, 2023 and 2022, we pledged cash collateral for our derivative contracts of $3.3 million and $2.7 million. In connection with the issuance of the credit-linked notes on September 29, 2022, legacy Pacific Western Bank deposited $132.8 million into a correspondent bank account at a third party financial institution as the collateral account for the credit-linked notes. The repayment of principal on the credit-linked notes is secured by this collateral account, which had a balance of $125.2 million at December 31, 2023 and $131.5 million at December 31, 2022. Starting in the second quarter of 2023, we began to pledge cash to secure the standby letters of credit that we have issued on behalf of our customers. At December 31, 2023, the balance of such restricted cash totaled $56.6 million.

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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