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Loans Receivable Held for Investment - Troubled Debt Restructurings (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Troubled debt restructuring
Loans classified as Troubled Debt Restructurings	$ 4,500,000	$ 4,500,000		$ 4,700,000
Specific reserves allocated to TDRs	144,000	$ 144,000		147,000
Timely payment period for return to accrual status		6 months
Commitments to lend additional amounts to customers with TDRs	$ 0	$ 0		0
Number of loans modified	0		0
Non-accrual status
Troubled debt restructuring
Loans classified as Troubled Debt Restructurings	$ 254,000	254,000		406,000
Accrual status
Troubled debt restructuring
Loans classified as Troubled Debt Restructurings	$ 4,200,000	$ 4,200,000		$ 4,300,000

X

- Definition

Amount of allowance to cover probable credit losses on loans for which the terms have been modified in troubled debt restructurings.

+ References

No definition available.

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- Definition

Period of receipt of timely payments after which a financing receivable that has been modified in a troubled debt restructuring and is on non-accrual status can typically be returned to accrual status, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524

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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18794-111554

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