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Fixed Assets - Additional information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 10 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Mar. 31, 2021
Leases |  |  |  |  |  |  |
Operating lease cost |  | $ 66,000 | $ 63,000 |  | $ 162,000 | $ 186,000 |
Short-term lease cost |  | $ 14,000 | $ 0 |  | 33,000 | $ 0 |
Washington |  |  |  |  |  |  |
Leases |  |  |  |  |  |  |
Monthly rent expense | $ 12,000 |  |  | $ 13,900 |  |  | $ 13,500
Annual rent expense, increase (in percent) |  |  |  | 3.00% |  |  |
Oklahoma |  |  |  |  |  |  |
Leases |  |  |  |  |  |  |
Monthly rent expense |  |  |  | $ 5,100 |  |  |
Annual rent expense, increase (in percent) |  |  |  | 2.50% |  |  |
CHINA |  |  |  |  |  |  |
Leases |  |  |  |  |  |  |
Short term monthly rent expense |  |  |  |  | $ 4,500 |  |

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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 -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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