Quarterly report pursuant to Section 13 or 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
9 Months Ended 9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
Jan. 31, 2013
Sep. 30, 2013
Common Stock [Member]
Dec. 31, 2012
Common Stock [Member]
Sep. 30, 2013
SEACOR Common Stock [Member]
Sep. 30, 2013
Era Group Common Stock [Member]
Sep. 30, 2013
Restricted Stock [Member]
Jan. 14, 2013
Era Group Inc. 2013 Employee Stock Purchase Plan [Member]
Sep. 30, 2013
Era Group Inc. 2012 Incentive Plan [Member]
Sep. 30, 2013
Era Group Inc. 2012 Incentive Plan [Member]
Sep. 30, 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
Common stock, par value   $ 0.01 $ 0.01 $ 0.01       $ 0.01       $ 0.01
Percentage of stock price employees can purchase               85.00%        
Offering period               6 months        
Expiration period               10 years        
Shares remaining available for grant                     3,363,416  
Stock-based compensation expense                 $ 0.6 $ 1.3    
Restricted stock awarded             269,310          
Restricted stock awarded average grant date fair value             $ 21.24          
Stock options granted 200,000                      
Converted stock options 169,058       37,900 169,058