Quarterly report pursuant to Section 13 or 15(d)

GUARANTORS OF SECURITIES (Condensed Statement of Comprehensive Income) (Details)

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GUARANTORS OF SECURITIES (Condensed Statement of Comprehensive Income) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Condensed Statement of Income Captions [Line Items]        
Net income (loss) $ (81,215) $ (802) $ (90,074) $ (9,262)
Other comprehensive loss:        
Foreign currency translation adjustments 0 0 (2) 0
Income tax benefit 0 0 0 0
Total other comprehensive loss 0 0 (2) 0
Comprehensive income (loss) (81,215) (802) (90,076) (9,262)
Comprehensive income (loss) attributable to non-controlling interest in subsidiary (233) 242 219 6,822
Comprehensive income (loss) attributable to Era Group Inc. (81,448) (560) (89,857) (2,440)
Reportable Legal Entities | Parent        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) (81,448) (560) (89,855) (2,440)
Other comprehensive loss:        
Foreign currency translation adjustments 0 0 0 0
Income tax benefit 0 0 0 0
Total other comprehensive loss 0 0 0 0
Comprehensive income (loss) (81,448) (560) (89,855) (2,440)
Comprehensive income (loss) attributable to non-controlling interest in subsidiary 0 0 0 0
Comprehensive income (loss) attributable to Era Group Inc. (81,448) (560) (89,855) (2,440)
Reportable Legal Entities | Guarantors        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) (76,247) 7,431 (70,354) 14,848
Other comprehensive loss:        
Foreign currency translation adjustments 0 0 (2) 0
Income tax benefit 0 0 0 0
Total other comprehensive loss 0 0 (2) 0
Comprehensive income (loss) (76,247) 7,431 (70,356) 14,848
Comprehensive income (loss) attributable to non-controlling interest in subsidiary 0 0 0 6,349
Comprehensive income (loss) attributable to Era Group Inc. (76,247) 7,431 (70,356) 21,197
Reportable Legal Entities | Non-guarantors        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) (1,052) (4,570) (9,253) (12,611)
Other comprehensive loss:        
Foreign currency translation adjustments 0 0 0 0
Income tax benefit 0 0 0 0
Total other comprehensive loss 0 0 0 0
Comprehensive income (loss) (1,052) (4,570) (9,253) (12,611)
Comprehensive income (loss) attributable to non-controlling interest in subsidiary (233) 242 219 473
Comprehensive income (loss) attributable to Era Group Inc. (1,285) (4,328) (9,034) (12,138)
Eliminations        
Condensed Statement of Income Captions [Line Items]        
Net income (loss) 77,532 (3,103) 79,388 (9,059)
Other comprehensive loss:        
Foreign currency translation adjustments 0 0 0 0
Income tax benefit 0 0 0 0
Total other comprehensive loss 0 0 0 0
Comprehensive income (loss) 77,532 (3,103) 79,388 (9,059)
Comprehensive income (loss) attributable to non-controlling interest in subsidiary 0 0 0 0
Comprehensive income (loss) attributable to Era Group Inc. $ 77,532 $ (3,103) $ 79,388 $ (9,059)