Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS??? EQUITY - Additional Information (Detail)

v3.19.3.a.u2
STOCKHOLDERS’ EQUITY - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
May 23, 2019
USD ($)
$ / shares
shares
Jun. 30, 2018
USD ($)
shares
Jan. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
Jan. 31, 2017
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Mar. 31, 2018
shares
Jun. 30, 2017
shares
Mar. 31, 2017
shares
Class of Stock [Line Items]                      
Warrant, number of shares available to purchase 1,500,000                    
Warrant, exercise price | $ / shares $ 10.00                    
Warrants outstanding, term 5 years                    
Warrants outstanding | $ $ 3,300                    
Conversion ratio           1          
Option to purchase additional shares of common stock   12,000,000.0   10,000,000.0              
Proceeds from sale of common stock, net of fees and commissions | $   $ 115,200   $ 94,800              
Fees and commissions | $   $ 3,600   $ 5,200   $ 0 $ 4,090 $ 5,707      
Treasury shares retired (in shares)       1,300,000              
At-the-market program                      
Class of Stock [Line Items]                      
Aggregate sales proceeds (up to) | $           189,700          
Over-allotment option                      
Class of Stock [Line Items]                      
Option to purchase additional shares of common stock     1,500,000                
Proceeds from sale of common stock, net of fees and commissions | $     $ 14,500                
Fees and commissions | $     $ 500                
Option to purchase shares (up to) (in shares)   1,800,000   1,500,000              
Convertible preferred stock                      
Class of Stock [Line Items]                      
Convertible preferred stock, shares issued                 6,100,000    
TOTAL delaware inc                      
Class of Stock [Line Items]                      
Option to purchase additional shares of common stock         35,400,000            
Proceeds from sale of common stock, net of fees and commissions | $         $ 207,000            
Shares exchanged for issue of common stock (in shares)         46,000,000            
GE oil & gas, inc.                      
Class of Stock [Line Items]                      
Number of shares converted                   5,500,000  
GE oil & gas, inc. | Series A preferred stock                      
Class of Stock [Line Items]                      
Number of shares converted                     5,500,000
GE oil & gas, inc. | Series B preferred stock                      
Class of Stock [Line Items]                      
Number of shares converted                   5,500,000  
Other non-current assets                      
Class of Stock [Line Items]                      
Deferred engineering costs | $           $ 50,000