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Loans and Allowance for Credit Losses - Residential Real Estate Foreclosures and Purchased Credit Deteriorated Loans (Details) - USD ($)	3 Months Ended			6 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Loans and Allowance for Credit Losses
Foreclosed residential real estate properties physical possession	$ 695,000	$ 563,000		$ 695,000	$ 563,000
Residential mortgage loans and home equity loans formal foreclosure proceedings in process	610,000	435,000		610,000	435,000
PCI loans		$ 21,800,000			$ 21,800,000
ACL				434,000
PCD loans receivable, net of ACL				16,300,000
ALLL or ACL by a charge to the income statement related to PCI or PCD loans	0		$ 0	0		$ 0
ACL reversed	$ 209,000,000		$ 0	$ 209,000,000		$ 0

X

- Definition

Represents the monetary amount of Foreclosed residential real estate properties physical possession, as of the indicated date.

+ References

No definition available.

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- Definition

Represents the monetary amount of Residential mortgage loans and home equity loans formal foreclosure proceedings in process, as of the indicated date.

+ References

No definition available.

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- Definition

Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
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- Definition

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

+ References

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Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration.

+ References

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- Definition

Amount at par value of financing receivable purchased with credit deterioration.

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Amount at purchase price of financing receivable purchased with credit deterioration.

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