Annual report pursuant to Section 13 and 15(d)

Merger and Acquisition - Additional Information (Detail)

v3.8.0.1
Merger and Acquisition - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 10, 2017
Apr. 09, 2016
Dec. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]        
Goodwill $ 77,592,000      
Goodwill deductible for income tax purposes 0      
Goodwill impairment     $ 77,592,000 $ 0
Equity consideration valued $ 87,869,000      
Net loss     (231,459,000) $ (96,655,000)
Parallax Services        
Business Acquisition [Line Items]        
Goodwill     1,200,000  
Equity consideration valued   $ 1,000,000    
Net loss     $ 800,000