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Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Operating Leases |  |
Operating lease right-of-use assets | $ 419 | $ 794
Restructured lease right-of-use assets | 0 | 107
Operating lease right-of-use assets, total | 419 | 901
Operating lease liabilities | 505 | 916
Restructured lease liabilities | 0 | 168
Operating lease liabilities, total | 505 | 1,084
Finance Leases |  |
Property and equipment | 13 | 13
Allowances for depreciation | (11) | (9)
Finance lease assets, net | 2 | 4
Finance lease liabilities | $ 1 | $ 4

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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