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Net Income (Loss) Per Common Share - Additional Information (Detail) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Earnings Per Share [Abstract] |  |  |  |
Antidilutive securities excluded from computation of earnings per share, minimum price range (in dollars per share) | $ 7.93 | $ 7.93 | $ 7.93 | $ 8.54
Anti dilutive securities excluded from computation of earnings per share, maximum price range (in dollars per share) | 25.16 | $ 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 |  |  | 25.00% |
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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