v3.6.0.2

Business Segments and Geographic Areas - Schedule of Financial Information Concerning Reportable Operating Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  | $ 144,853 | $ 158,093 | $ 167,136 | $ 164,016 | $ 186,751 | $ 214,733 | $ 198,547 | $ 204,197 | $ 634,098 | $ 804,228 | $ 836,270
Total segment direct expenses |  |  |  |  |  |  |  |  |  | 592,550 | 687,050 | 670,007
Total segment selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 44,418 | 46,422 | 43,171
Total net segment profit |  |  |  |  |  |  |  |  |  | 224 | 70,111 | 111,640
Interest expense |  |  |  |  |  |  |  |  |  | (30,644) | (29,066) | (29,510)
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  |  | (29,833)
(Loss) earnings before income taxes |  | $ (12,012) | $ (7,766) | $ 117 | $ (7,488) | $ 938 | $ 14,290 | $ 11,044 | $ 16,984 | (27,149) | 43,256 | 53,115
Reportable Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 634,098 | 804,228 | 836,270
Total segment direct expenses |  |  |  |  |  |  |  |  |  | 592,399 | 687,356 | 670,103
Total segment selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 18,808 | 17,771 | 14,573
Total segment expenses |  |  |  |  |  |  |  |  |  | 611,207 | 705,127 | 684,676
Total net segment profit |  |  |  |  |  |  |  |  |  | 22,891 | 99,101 | 151,594
Reportable Operating Segments [Member] | Air Medical [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 281,868 | 312,775 | 300,212
Total segment direct expenses |  |  |  |  |  |  |  |  |  | 227,877 | 246,487 | 243,573
Total segment selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 10,968 | 10,455 | 9,801
Total net segment profit |  |  |  |  |  |  |  |  |  | 43,023 | 55,833 | 46,838
Reportable Operating Segments [Member] | Oil and Gas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 324,129 | 459,611 | 516,909
Total segment direct expenses | [1] |  |  |  |  |  |  |  |  | 344,640 | 411,757 | 411,679
Total segment selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 6,739 | 6,511 | 4,615
Total net segment profit |  |  |  |  |  |  |  |  |  | (27,250) | 41,343 | 100,615
Reportable Operating Segments [Member] | Technical Services [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 28,101 | 31,842 | 19,149
Total segment direct expenses |  |  |  |  |  |  |  |  |  | 19,882 | 29,112 | 14,851
Total segment selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 1,101 | 805 | 157
Total net segment profit |  |  |  |  |  |  |  |  |  | 7,118 | 1,925 | 4,141
Segment Reconciling Items [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Other, net | [2] |  |  |  |  |  |  |  |  | 6,214 | 1,872 | (10,539)
Interest expense |  |  |  |  |  |  |  |  |  | (30,644) | (29,066) | (29,510)
Corporate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Unallocated selling, general and administrative costs |  |  |  |  |  |  |  |  |  | $ (25,610) | $ (28,651) | $ (28,597)
[1] | Includes equity in gain/loss of unconsolidated affiliate.
[2] | Includes gains on disposition of property and equipment, asset impairments, and other income.

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