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Net Income (Loss) Per Share - Additional Information (Detail) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 11, 2019
Net Income Per Share [Line Items] |  |  |  |
Anti-dilutive securities excluded from computation of earnings per share minimum price range (in usd per share) | $ 7.93 | $ 8.54 | $ 4.42 |
Anti-dilutive securities excluded from computation of earnings per share maximum price range one (in usd per share) | 25.16 | $ 25.16 | $ 25.16 |
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ 12.00 |  |  | $ 12.00
Preferred stock, conversion limit | 2500.00% |  |  |
Preferred stock, period of volume weighted average price per common share | 30 days |  |  |
Preferred stock, conversion percentage of volume weighted average market price, percent | 90.00% |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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