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Summary of Significant Accounting Policies - Earnings Per Share - Additional Information (Detail) - $ / shares |  | 9 Months Ended |
--- | --- | --- | ---
Jul. 16, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Performance multiplier, minimum |  | 0.00% |
Performance multiplier, maximum |  | 200.00% |
Participating securities that share in losses (in shares) |  | 0 |
Preferred stock, conversion price per share in dollars per share) |  | $ 4.00 |
Restricted Stock |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Shares of unvested restricted stock outstanding (in shares) |  | 1,044,673 | 1,092,309
Series A and Series B Convertible Preferred Stock |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Aggregate common stock upon conversion (in shares) | 43,750,000 |  |

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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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