v3.21.2

Commitments and Contingencies - Summary of Total Lease Costs Associated with Operating Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Variable lease costs
Total lease costs	$ 211	$ 201	$ 621	$ 505
General and Administrative | Office Lease
Operating lease costs
Operating lease costs	158	155	473	362
Property and Operating Expense | Ground Lease
Operating lease costs
Operating lease costs	39	33	106	100
Variable lease costs
Variable lease costs	$ 14	$ 13	$ 42	$ 43

X

- Definition

Operating lease cost.

+ References

No definition available.

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- Definition

Variable lease cost.

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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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