Fair Value of Financial Instruments (Rollforward of Allowance for Mortgage Loan Losses) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
Rollforward of allowance for mortgage loan losses:
Beginning balance	$ 72
Current-period provision for expected credit losses	4
Write-off charged against the allowance, if any	0
Recoveries of amounts previously written off, if any	0
Ending balance of the allowance for mortgage loan losses	$ 76

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Period Type:	instant

- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

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