GUARANTORS OF SECURITIES (Condensed Income Statement) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| Operating revenues |
$ 61,385
|
$ 65,006
|
$ 173,790
|
$ 190,939
|
| Costs and expenses: |
|
|
|
|
| Operating |
43,987
|
40,371
|
123,079
|
132,074
|
| Administrative and general |
10,928
|
9,504
|
31,211
|
26,871
|
| Depreciation |
12,103
|
12,519
|
35,635
|
37,976
|
| Total costs and expenses |
67,018
|
62,394
|
189,925
|
196,921
|
| Gains (losses) on asset dispositions, net |
(122)
|
(246)
|
5,048
|
4,034
|
| Loss on impairment |
(117,018)
|
0
|
(117,018)
|
0
|
| Operating income (loss) |
(122,773)
|
2,366
|
(128,105)
|
(1,948)
|
| Other income (expense): |
|
|
|
|
| Interest income |
206
|
466
|
641
|
1,170
|
| Interest expense |
(4,097)
|
(4,003)
|
(11,620)
|
(12,881)
|
| Foreign currency gains (losses), net |
12
|
(33)
|
(96)
|
577
|
| Gain on debt extinguishment |
0
|
0
|
0
|
518
|
| Other, net |
(33)
|
34
|
(29)
|
63
|
| Total other income (expense) |
(3,912)
|
(3,536)
|
(11,104)
|
(10,553)
|
| Loss before income taxes and equity earnings |
(126,685)
|
(1,170)
|
(139,209)
|
(12,501)
|
| Income tax expense (benefit) |
(45,237)
|
69
|
(48,066)
|
(2,177)
|
| Loss before equity earnings |
(81,448)
|
(1,239)
|
(91,143)
|
(10,324)
|
| Equity earnings, net of tax |
233
|
437
|
1,069
|
1,062
|
| Equity in earnings (losses) of subsidiaries |
0
|
0
|
0
|
0
|
| Net income (loss) |
(81,215)
|
(802)
|
(90,074)
|
(9,262)
|
| Net loss (income) attributable to non-controlling interest in subsidiary |
(233)
|
242
|
219
|
6,822
|
| Net income (loss) attributable to Era Group Inc. |
(81,448)
|
(560)
|
(89,855)
|
(2,440)
|
| Reportable Legal Entities | Parent |
|
|
|
|
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| Operating revenues |
0
|
0
|
0
|
0
|
| Costs and expenses: |
|
|
|
|
| Operating |
0
|
0
|
0
|
0
|
| Administrative and general |
2,305
|
738
|
5,280
|
2,657
|
| Depreciation |
0
|
0
|
0
|
0
|
| Total costs and expenses |
2,305
|
738
|
5,280
|
2,657
|
| Gains (losses) on asset dispositions, net |
0
|
0
|
0
|
0
|
| Loss on impairment |
0
|
|
0
|
|
| Operating income (loss) |
(2,305)
|
(738)
|
(5,280)
|
(2,657)
|
| Other income (expense): |
|
|
|
|
| Interest income |
47
|
24
|
96
|
37
|
| Interest expense |
(3,838)
|
(3,581)
|
(10,800)
|
(11,765)
|
| Foreign currency gains (losses), net |
66
|
28
|
220
|
45
|
| Gain on debt extinguishment |
|
|
|
518
|
| Other, net |
0
|
0
|
0
|
0
|
| Total other income (expense) |
(3,725)
|
(3,529)
|
(10,484)
|
(11,165)
|
| Loss before income taxes and equity earnings |
(6,030)
|
(4,267)
|
(15,764)
|
(13,822)
|
| Income tax expense (benefit) |
(2,114)
|
(604)
|
(5,297)
|
(2,323)
|
| Loss before equity earnings |
(3,916)
|
(3,663)
|
(10,467)
|
(11,499)
|
| Equity earnings, net of tax |
0
|
0
|
0
|
0
|
| Equity in earnings (losses) of subsidiaries |
(77,532)
|
3,103
|
(79,388)
|
9,059
|
| Net income (loss) |
(81,448)
|
(560)
|
(89,855)
|
(2,440)
|
| Net loss (income) attributable to non-controlling interest in subsidiary |
0
|
0
|
0
|
0
|
| Net income (loss) attributable to Era Group Inc. |
(81,448)
|
(560)
|
(89,855)
|
(2,440)
|
| Reportable Legal Entities | Guarantors |
|
|
|
|
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| Operating revenues |
51,919
|
59,130
|
151,550
|
175,607
|
| Costs and expenses: |
|
|
|
|
| Operating |
35,826
|
31,759
|
98,117
|
107,127
|
| Administrative and general |
7,306
|
7,274
|
21,648
|
21,233
|
| Depreciation |
11,851
|
12,244
|
34,898
|
37,144
|
| Total costs and expenses |
54,983
|
51,277
|
154,663
|
165,504
|
| Gains (losses) on asset dispositions, net |
(122)
|
2
|
5,048
|
4,282
|
| Loss on impairment |
(116,586)
|
|
(116,586)
|
|
| Operating income (loss) |
(119,772)
|
7,855
|
(114,651)
|
14,385
|
| Other income (expense): |
|
|
|
|
| Interest income |
102
|
116
|
320
|
358
|
| Interest expense |
(170)
|
(387)
|
(627)
|
(671)
|
| Foreign currency gains (losses), net |
85
|
82
|
253
|
(142)
|
| Gain on debt extinguishment |
|
|
|
0
|
| Other, net |
(1)
|
1
|
0
|
2
|
| Total other income (expense) |
16
|
(188)
|
(54)
|
(453)
|
| Loss before income taxes and equity earnings |
(119,756)
|
7,667
|
(114,705)
|
13,932
|
| Income tax expense (benefit) |
(43,276)
|
673
|
(43,282)
|
146
|
| Loss before equity earnings |
(76,480)
|
6,994
|
(71,423)
|
13,786
|
| Equity earnings, net of tax |
233
|
437
|
1,069
|
1,062
|
| Equity in earnings (losses) of subsidiaries |
0
|
0
|
0
|
0
|
| Net income (loss) |
(76,247)
|
7,431
|
(70,354)
|
14,848
|
| Net loss (income) attributable to non-controlling interest in subsidiary |
0
|
0
|
0
|
6,349
|
| Net income (loss) attributable to Era Group Inc. |
(76,247)
|
7,431
|
(70,354)
|
21,197
|
| Reportable Legal Entities | Non-guarantors |
|
|
|
|
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| Operating revenues |
16,729
|
15,786
|
46,132
|
47,669
|
| Costs and expenses: |
|
|
|
|
| Operating |
15,424
|
18,522
|
48,854
|
57,284
|
| Administrative and general |
1,317
|
1,492
|
4,283
|
2,981
|
| Depreciation |
252
|
275
|
737
|
832
|
| Total costs and expenses |
16,993
|
20,289
|
53,874
|
61,097
|
| Gains (losses) on asset dispositions, net |
0
|
(248)
|
0
|
(248)
|
| Loss on impairment |
(432)
|
|
(432)
|
|
| Operating income (loss) |
(696)
|
(4,751)
|
(8,174)
|
(13,676)
|
| Other income (expense): |
|
|
|
|
| Interest income |
57
|
326
|
225
|
775
|
| Interest expense |
(89)
|
(35)
|
(193)
|
(445)
|
| Foreign currency gains (losses), net |
(139)
|
(143)
|
(569)
|
674
|
| Gain on debt extinguishment |
|
|
|
0
|
| Other, net |
(32)
|
33
|
(29)
|
61
|
| Total other income (expense) |
(203)
|
181
|
(566)
|
1,065
|
| Loss before income taxes and equity earnings |
(899)
|
(4,570)
|
(8,740)
|
(12,611)
|
| Income tax expense (benefit) |
153
|
0
|
513
|
0
|
| Loss before equity earnings |
(1,052)
|
(4,570)
|
(9,253)
|
(12,611)
|
| Equity earnings, net of tax |
0
|
0
|
0
|
0
|
| Equity in earnings (losses) of subsidiaries |
0
|
0
|
0
|
0
|
| Net income (loss) |
(1,052)
|
(4,570)
|
(9,253)
|
(12,611)
|
| Net loss (income) attributable to non-controlling interest in subsidiary |
(233)
|
242
|
219
|
473
|
| Net income (loss) attributable to Era Group Inc. |
(1,285)
|
(4,328)
|
(9,034)
|
(12,138)
|
| Eliminations |
|
|
|
|
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| Operating revenues |
(7,263)
|
(9,910)
|
(23,892)
|
(32,337)
|
| Costs and expenses: |
|
|
|
|
| Operating |
(7,263)
|
(9,910)
|
(23,892)
|
(32,337)
|
| Administrative and general |
0
|
0
|
0
|
0
|
| Depreciation |
0
|
0
|
0
|
0
|
| Total costs and expenses |
(7,263)
|
(9,910)
|
(23,892)
|
(32,337)
|
| Gains (losses) on asset dispositions, net |
0
|
0
|
0
|
0
|
| Loss on impairment |
0
|
|
0
|
|
| Operating income (loss) |
0
|
0
|
0
|
0
|
| Other income (expense): |
|
|
|
|
| Interest income |
0
|
0
|
0
|
0
|
| Interest expense |
0
|
0
|
0
|
0
|
| Foreign currency gains (losses), net |
0
|
0
|
0
|
0
|
| Gain on debt extinguishment |
|
|
|
0
|
| Other, net |
0
|
0
|
0
|
0
|
| Total other income (expense) |
0
|
0
|
0
|
0
|
| Loss before income taxes and equity earnings |
0
|
0
|
0
|
0
|
| Income tax expense (benefit) |
0
|
0
|
0
|
0
|
| Loss before equity earnings |
0
|
0
|
0
|
0
|
| Equity earnings, net of tax |
0
|
0
|
0
|
0
|
| Equity in earnings (losses) of subsidiaries |
77,532
|
(3,103)
|
79,388
|
(9,059)
|
| Net income (loss) |
77,532
|
(3,103)
|
79,388
|
(9,059)
|
| Net loss (income) attributable to non-controlling interest in subsidiary |
0
|
0
|
0
|
0
|
| Net income (loss) attributable to Era Group Inc. |
$ 77,532
|
$ (3,103)
|
$ 79,388
|
$ (9,059)
|