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
3 Months Ended
Jun. 11, 2020
Sep. 30, 2020
Sep. 16, 2020
Jun. 10, 2020
Mar. 31, 2020
Oct. 31, 2019
Class of Stock [Line Items]            
Common stock, shares outstanding (in shares)   29,813,734     11,235,566  
Common stock, shares issued (in shares) 30,882,471 29,813,734   11,092,845    
Preferred stock, shares issued (in shares)   0   6,725,798    
Preferred stock, shares outstanding (in shares)   0        
Mezzanine equity, initial fair value           $ 618,900
Derivative liability           470,300
Mezzanine equity, fair value           148,600
Common stock [1]   $ 303     $ 1  
Conversion rate of stock (in shares) 5.179562          
Stock repurchase program, authorized amount   $ 75,000 $ 75,000      
Stock repurchased (in shares)   345,327        
Stock repurchased during period   $ 7,600        
Stock repurchased during period (in dollars per share)   $ 21.93        
Stock repurchase program, remaining authorized repurchase amount   $ 67,400        
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.