Quarterly report pursuant to Section 13 or 15(d)

BUSINESS COMBINATIONS - Narrative (Details)

v3.20.4
BUSINESS COMBINATIONS - Narrative (Details)
$ / shares in Units, $ in Thousands
 2 Months Ended 3 Months Ended 7 Months Ended 9 Months Ended
Jun. 11, 2020
USD ($)
director
$ / shares
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Oct. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Jan. 24, 2020
$ / shares
Business Acquisition [Line Items]            
Number of directors | director 8          
Number of directors designated by Bristow | director 6          
Gain on bargain purchase | $   $ 0 $ 5,700 $ 0 $ 81,093  
Era            
Business Acquisition [Line Items]            
Gain on bargain purchase | $ $ 81,100          
Former Bristow stockholders | Combined Company Common Stock            
Business Acquisition [Line Items]            
Ownership percentage 77.00%          
Era Common Stockholders | Combined Company Common Stock            
Business Acquisition [Line Items]            
Ownership percentage 23.00%          
Era            
Business Acquisition [Line Items]            
Price per share (in USD per share) | $ / shares $ 5.16         $ 8.59