Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION Narrative (Details)

v2.4.0.8
SHARE-BASED COMPENSATION Narrative (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 0 Months Ended
Dec. 31, 2013
Dec. 31, 2013
SEACOR Common Stock [Member]
Dec. 31, 2013
Era Group Common Stock [Member]
Dec. 31, 2013
Restricted Stock [Member]
Dec. 31, 2013
Restricted Stock [Member]
SEACOR and Era Group Common Stock [Member]
Jan. 14, 2013
Era Group Inc. 2013 Employee Stock Purchase Plan [Member]
Dec. 31, 2013
Era Group Inc. 2012 Incentive Plan [Member]
Common Stock [Member]
Jan. 14, 2013
Era Group Inc. 2012 Incentive Plan [Member]
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Maximum number of shares authorized           300,000   4,000,000
Percentage of stock price employees can purchase           85.00%    
Offering period           6 months    
Expiration period           10 years    
Shares remaining available for grant             3,364,998  
Stock-based compensation expense $ 2.0              
Unrecognized compensation costs 5.8              
Granted 235,452     270,360 264,760      
Granted       $ 21.28        
Stock options granted 200,000              
Converted stock options 169,058 37,900 169,058          
Aggregate intrinsic value of exercised stock options 0.4              
Weighted average remaining contractual term for total outstanding stock options and vested/exercisable stock options 7 years 11 months 1 day              
Aggregate intrinsic value of all options outstanding and all vested/exercisable options outstanding $ 6.2