Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
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- Definition

Amount of the required periodic payments applied to principal.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column G))
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events - Additional Information (Details) - USD ($) $ in Thousands	Jul. 21, 2021	Jul. 07, 2021	Jun. 30, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Mortgage Loans On Real Estate			$ 117,280	$ 101,450
Subsequent Event \| Fairlane Green Property \| Fund V \| Mortgages
Subsequent Event [Line Items]
Mortgage Loans On Real Estate		$ 40,300
Debt instrument, maturity date		Jun. 05, 2022
Scheduled principal payment		$ 6,600
Subsequent Event \| 146 Geary Street Property \| Fund IV \| Mortgages
Subsequent Event [Line Items]
Mortgage Loans On Real Estate	$ 22,900
Debt instrument, maturity date	Jul. 15, 2023
Scheduled principal payment	$ 3,600