| Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended | ||||
|---|---|---|---|---|---|
| Aug. 24, 2020  $ / shares | Aug. 20, 2020  $ / shares | Jun. 30, 2021  $ / shares | Jun. 30, 2020  $ / shares | Dec. 31, 2020  $ / shares | |
| Summary Of Significant Accounting Policies [Line Items] | |||||
| Reverse stock split ratio | 0.8741 | 1.14396 | |||
| Common stock, par value | $ 0.001 | $ 0.001 | $ 0.001 | $ 5.50 | $ 0.001 | 
| Customer Concentration Risk | Sales Revenue | |||||
| Summary Of Significant Accounting Policies [Line Items] | |||||
| Concentration risk, percentage | 90.00% | 90.00% | |||
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- Definition Summary of significant accounting policies. No definition available. 
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- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Details 
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