Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION Narrative (Details)

v3.3.1.900
SHARE-BASED COMPENSATION Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 3.7 $ 5.8 $ 2.0
Unrecognized compensation costs $ 5.1    
Weighted average grant-date fair value of options granted (per option) (in dollars per share) $ 6.69 $ 10.86 $ 9.59
Aggregate intrinsic value of exercised stock options $ 0.0 $ 0.2 $ 0.4
Weighted average remaining contractual term for vested/exercisable stock options 6 years 4 months 22 days    
Weighted average remaining contractual term for total outstanding stock options 4 years 8 months 20 days    
Aggregate intrinsic value of all options outstanding and all vested/exercisable options outstanding $ 0.0    
Unrecognized compensation cost period for recognition (in years) 2 years    
Era Group Inc. 2012 Incentive Plan | Common Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares authorized     4,000,000
Shares remaining available for grant 3,071,335 3,216,798  
Era Group Inc. 2013 Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares authorized     300,000
Shares remaining available for grant 180,641 246,914  
Percentage of stock price employees can purchase     85.00%
Offering period     6 months
Expiration period     10 years
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) 193,688 127,050 270,360
Granted (in dollars per share) $ 20.82 $ 29.23 $ 21.28
Fair value of closing price on grant date $ 1.9 $ 4.1 $ 0.1
Accelerated vesting of shares   $ 1.6