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Stockholders' Equity and Dilutive Equity Instruments - Additional Information (Detail) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
In-the-money Warrants and Restricted Stock Awards and Units |  |
Stockholders Equity Note [Line Items] |  |
Incremental "in-the-money" warrants, and restricted stock awards and units | 2,133,439 | 4,327,358
Out-of-the-money Warrants |  |
Stockholders Equity Note [Line Items] |  |
Warrants outstanding | 5,923,399 | 5,923,399
Out-of-the-money Warrants | Series A Warrants |  |
Stockholders Equity Note [Line Items] |  |
Warrants exercise prices | $ 57.06 | $ 57.06
Out-of-the-money Warrants | Series B Warrants |  |
Stockholders Equity Note [Line Items] |  |
Warrants exercise prices | 62.28 | 62.28
Out-of-the-money Warrants | GLF Equity Warrants |  |
Stockholders Equity Note [Line Items] |  |
Warrants exercise prices | $ 100.00 | $ 100.00

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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