Quarterly report pursuant to Section 13 or 15(d)

Supplemental Statement of Comprehensive Income (Loss) (Details)

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Supplemental Statement of Comprehensive Income (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]    
Net Income (Loss) $ 6,589 $ (4,633)
Other Comprehensive Income (Loss):    
Foreign currency translation adjustments (162) 980
Income tax benefit 57 (343)
Other Comprehensive Income (Loss), Net of Tax (105) 637
Comprehensive Income (Loss) 6,484 (3,996)
Comprehensive Loss attributable to Noncontrolling Interest in Subsidiary 105 0
Comprehensive Income (Loss) attributable to Era Group Inc. 6,589 (3,996)
Parent Company Only [Member]
    
Condensed Financial Statements, Captions [Line Items]    
Net Income (Loss) 6,589 (4,633)
Other Comprehensive Income (Loss):    
Foreign currency translation adjustments (162) 980
Income tax benefit 57 (343)
Other Comprehensive Income (Loss), Net of Tax (105) 637
Comprehensive Income (Loss) 6,484  
Comprehensive Loss attributable to Noncontrolling Interest in Subsidiary 105  
Comprehensive Income (Loss) attributable to Era Group Inc. 6,379 (3,996)
Guarantor Subsidiaries [Member]
    
Condensed Financial Statements, Captions [Line Items]    
Net Income (Loss) 3,835 (3,966)
Other Comprehensive Income (Loss):    
Foreign currency translation adjustments (162) 980
Income tax benefit 57 (343)
Other Comprehensive Income (Loss), Net of Tax (105) 637
Comprehensive Income (Loss) 3,730  
Comprehensive Loss attributable to Noncontrolling Interest in Subsidiary 105  
Comprehensive Income (Loss) attributable to Era Group Inc. 3,835 (3,329)
Non-Guarantor Subsidiaries [Member]
    
Condensed Financial Statements, Captions [Line Items]    
Net Income (Loss) (210) (1)
Other Comprehensive Income (Loss):    
Foreign currency translation adjustments 0 0
Income tax benefit 0 0
Other Comprehensive Income (Loss), Net of Tax 0 0
Comprehensive Income (Loss) (210)  
Comprehensive Loss attributable to Noncontrolling Interest in Subsidiary 0  
Comprehensive Income (Loss) attributable to Era Group Inc. (210) (1)
Eliminations [Member]
    
Condensed Financial Statements, Captions [Line Items]    
Net Income (Loss) (3,625) 3,967
Other Comprehensive Income (Loss):    
Foreign currency translation adjustments 162 (980)
Income tax benefit (57) 343
Other Comprehensive Income (Loss), Net of Tax 105 (637)
Comprehensive Income (Loss) (3,520)  
Comprehensive Loss attributable to Noncontrolling Interest in Subsidiary (105)  
Comprehensive Income (Loss) attributable to Era Group Inc. $ (3,415) $ 3,330