v3.5.0.2

Segment Information - Schedule of Financial Information Concerning Reportable Operating Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues, net |  | $ 158,093 | $ 214,733 | $ 489,245 | $ 617,477
Total direct expenses |  | 144,938 | 182,064 | 449,909 | 520,099
Total segment selling, general and administrative expenses |  | 13,381 | 11,575 | 36,832 | 34,859
Total |  | (509) | 21,184 | 6,084 | 62,508
Interest expense |  | (7,719) | (7,366) | (22,792) | (21,691)
(Loss) earnings before income taxes |  | (7,766) | 14,290 | (15,137) | 42,318
Reportable Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues, net |  | 158,093 | 214,733 | 489,245 | 617,477
Total direct expenses | [1] | 145,136 | 182,139 | 450,183 | 520,348
Total segment selling, general and administrative expenses |  | 5,027 | 3,929 | 13,894 | 11,841
Total segment expenses |  | 150,163 | 186,068 | 464,077 | 532,189
Total |  | 7,930 | 28,665 | 25,168 | 85,288
Reportable Operating Segments [Member] | Air Medical [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues, net |  | 74,482 | 85,516 | 220,089 | 239,543
Total direct expenses | [1] | 56,562 | 65,474 | 172,603 | 189,089
Total segment selling, general and administrative expenses |  | 3,056 | 2,302 | 8,293 | 7,458
Total |  | 14,864 | 17,740 | 39,193 | 42,996
Reportable Operating Segments [Member] | Oil and Gas [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues, net |  | 77,551 | 121,190 | 249,173 | 354,425
Total direct expenses | [1],[2] | 82,832 | 109,500 | 262,148 | 310,093
Total segment selling, general and administrative expenses |  | 1,705 | 1,397 | 4,838 | 3,831
Total |  | (6,986) | 10,293 | (17,813) | 40,501
Reportable Operating Segments [Member] | Technical Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues, net |  | 6,060 | 8,027 | 19,983 | 23,509
Total direct expenses | [1] | 5,742 | 7,165 | 15,432 | 21,166
Total segment selling, general and administrative expenses |  | 266 | 230 | 763 | 552
Total |  | 52 | 632 | 3,788 | 1,791
Segment Reconciling Items [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other, net | [3] | 377 | 637 | 5,425 | 1,739
Interest expense |  | (7,719) | (7,366) | (22,792) | (21,691)
Unallocated Selling, General and Administrative Expenses [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Unallocated selling, general and administrative costs | [1] | $ (8,354) | $ (7,646) | $ (22,938) | $ (23,018)
[1] | Included in direct expenses and unallocated selling, general, and administrative costs are the depreciation and amortization expense amounts below: Depreciation and Amortization Expense Quarter Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 Segment Direct Expense: Oil and Gas $ 10,616 $ 11,194 $ 30,558 $ 32,797 Air Medical 5,267 4,100 14,654 12,948 Technical Services 141 130 426 390 Total $ 16,024 $ 15,424 $ 45,638 $ 46,135 Unallocated SG&A $ 2,269 $ 2,376 $ 7,416 $ 8,177
[2] | Includes Equity in loss of unconsolidated affiliate.
[3] | Consists of gains on disposition of property and equipment, and other income.

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