The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Borrowings and Other Obligations - Lines of Credit (Details) - Line of credit - USD ($)	Aug. 26, 2021	Mar. 31, 2022	Dec. 31, 2021	Aug. 06, 2021
Federal home loan bank borrowings
Line of Credit Facility [Line Items]
Lines of credit		$ 799,500,000	$ 820,500,000
Federal home loan bank borrowings \| American River Bank (ARB)
Line of Credit Facility [Line Items]
Lines of credit				$ 13,800,000
Repayments of Lines of Credit	$ 13,800,000
Federal home loan bank overnight borrowings
Line of Credit Facility [Line Items]
Amount of borrowings outstanding		0	0
Federal reserve line of credit
Line of Credit Facility [Line Items]
Lines of credit		57,300,000	70,800,000
Amount of borrowings outstanding		0	0
Unsecured debt \| Federal funds purchased
Line of Credit Facility [Line Items]
Lines of credit		150,000,000	150,000,000
Amount of borrowings outstanding		$ 0	$ 0