Quarterly report pursuant to Section 13 or 15(d)

EARNINGS (LOSS) PER COMMON SHARE (Details)

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EARNINGS (LOSS) PER COMMON SHARE (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Net income (loss) attributable to Era Group Inc. $ (10,379) $ (2,787) $ (11,573) $ (8,407)
Net income attributable to participating securities 0 0 0 0
Net loss attributable to fully vested common stock $ (10,379) $ (2,787) $ (11,573) $ (8,407)
Weighted average common shares outstanding - basic (in shares) 21,199,280 20,789,537 21,199,688 20,650,274
Weighted average common shares outstanding - diluted (in shares) 21,199,280 20,789,537 21,199,688 20,650,274
Income (loss) per common share:        
Loss per common share, basic and diluted (in dollars per share) $ (0.49) $ (0.13) $ (0.55) $ (0.41)
Stock Options and Restricted Stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Net effect of dilutive stock options and restricted stock awards based on the treasury stock method (in shares) [1] 0 0 0 0
Income (loss) per common share:        
Unvested restricted common shares (in shares) 211,094 275,851 223,497 280,199
[1] Excludes weighted average common shares of 211,094 and 275,851 for the three months ended June 30, 2018 and 2017, respectively, and 223,497 and 280,199 for the six months ended June 30, 2018 and 2017, respectively, for certain share awards as the effect of their inclusion would have been antidilutive.