Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME - Narrative (Details)

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STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
Jun. 11, 2020
Jun. 30, 2020
Jun. 10, 2020
Mar. 31, 2020
Oct. 31, 2019
Class of Stock [Line Items]          
Common stock, shares outstanding (in shares) 30,882,471 30,288,972 11,092,845 11,235,535  
Common stock, shares issued (in shares) 30,882,471 30,288,972 11,092,845    
Preferred stock, shares issued (in shares)   0 6,725,798    
Preferred stock, shares outstanding (in shares)   0 6,725,798    
Common stock, par value (in dollars per share)   $ 0.01   $ 0.01 $ 0.0001
Preferred stock, par value (in dollars per share)   $ 0.0001      
Mezzanine equity, initial fair value         $ 618,900
Derivative liability         470,300
Mezzanine equity, fair value   $ 0   $ 149,785 148,600
Common stock   $ 303   $ 1 [1]  
Conversion rate of stock (in shares) 5.179562        
Restricted Stock Awards          
Class of Stock [Line Items]          
Shares canceled (in shares) 217,899        
Shares vested, accelerated (in shares) 145,604        
Stock options          
Class of Stock [Line Items]          
Options canceled (in shares) 145,263        
Legacy Bristow stockholders          
Class of Stock [Line Items]          
Common stock, shares issued (in shares) 24,195,693        
Carrying amount          
Class of Stock [Line Items]          
Derivative liability         270,800
Common stock         $ 270,700
[1] Share information displayed as of March 31, 2020 does not take into account the impact of the 3:1 reverse stock split or the Merger.