Quarterly report pursuant to Section 13 or 15(d)

Share Based Compensation (Narrative) (Details)

v2.4.0.6
Share Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 3 Months Ended
Mar. 31, 2013
Jan. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Common Stock [Member]
Dec. 31, 2012
Common Stock [Member]
Mar. 31, 2013
SEACOR Common Stock [Member]
Mar. 31, 2013
Era Group Common Stock [Member]
Mar. 31, 2013
Restricted Stock [Member]
Mar. 31, 2013
Era Group Inc. 2012 Incentive Plan [Member]
Mar. 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                     4,000,000
Common stock, par value $ 0.01 $ 0.01 $ 10 $ 0.01 $ 0.01           $ 0.01
Shares remaining available for grant                   3,412,232  
Stock-based compensation expense                 $ 0.3    
Restricted stock awarded               233,710      
Restricted stock awarded average grant date fair value               $ 20.48      
Stock options granted 185,000                    
Converted stock options 169,058         37,900 169,058