Merger and Acquisition - Schedule of Unaudited Pro Forma Results (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Revenues	$ 0	$ 0
Net loss attributable to common stockholders	$ (145,091)	$ (19,038)
Net loss per basic share	$ (0.92)	$ (0.37)
Basic and diluted weighted average common shares outstanding	157,618	50,878
As Reported [Member]
Business Acquisition [Line Items]
Revenues	$ 0	$ 0
Net loss attributable to common stockholders	$ (141,349)	$ (7,193)
Net loss per basic share	$ (0.92)	$ (0.16)
Basic and diluted weighted average common shares outstanding	154,213	44,393
Pro Forma Adjustment [Member]
Business Acquisition [Line Items]
Revenues	$ 0	$ 0
Net loss attributable to common stockholders	$ (3,742)	(11,364)
Pro Forma Adjustment [Member] | Parallax Services [Member]
Business Acquisition [Line Items]
Net loss attributable to common stockholders		$ (481)