Federal Home Loan Bank Advances (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Federal Home Loan Bank Advances, short term	$ 0.0	$ 0.0
Federal Home Loan Bank [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Collateral on borrowing lines	808.9
Federal Home Loan Bank of San Francisco [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Federal Home Loan Bank Advances, short term	0.0	0.0
Federal Home Loan Bank Advances, long term	0.0	$ 0.0
Borrowing capacity	630.5
Federal Home Loan Bank of San Francisco [Member] \| Federal Home Loan Bank [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Collateral on borrowing lines	$ 808.9

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- Definition

Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

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-Publisher FASB
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- Definition

Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing.

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