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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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Stockholders Equity Note [Line Items]

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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)
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Exercise price per share or per unit of warrants or rights outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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Number of warrants or rights outstanding.

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