v3.4.0.3

Segment Information - Schedule of Financial Information Concerning Reportable Operating Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Segment Reporting Information [Line Items] |  |  |
Total operating revenues |  | $ 164,016 | $ 204,197
Total segment direct expenses |  | 152,554 | 169,207
Total selling, general and administrative expenses |  | 11,673 | 11,237
Total net segment profit |  | (570) | 23,692
Interest expense |  | (7,533) | (7,170)
(Loss) earnings before income taxes |  | (7,488) | 16,984
Reportable Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total operating revenues |  | 164,016 | 204,197
Total segment direct expenses | [1] | 152,554 | 169,275
Total selling, general and administrative expenses |  | 4,347 | 3,902
Total direct and selling, general and administrative expenses |  | 156,901 | 173,177
Total net segment profit |  | 7,115 | 31,020
Reportable Operating Segments [Member] | Air Medical [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total operating revenues |  | 70,060 | 72,385
Total segment direct expenses | [1] | 57,044 | 60,039
Total selling, general and administrative expenses |  | 2,595 | 2,629
Total net segment profit |  | 10,421 | 9,717
Reportable Operating Segments [Member] | Oil and Gas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total operating revenues |  | 88,437 | 120,396
Total segment direct expenses | [1],[2] | 91,916 | 100,331
Total selling, general and administrative expenses |  | 1,528 | 1,159
Total net segment profit |  | (5,007) | 18,906
Reportable Operating Segments [Member] | Technical Services [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total operating revenues |  | 5,519 | 11,416
Total segment direct expenses | [1] | 3,594 | 8,905
Total selling, general and administrative expenses |  | 224 | 114
Total net segment profit |  | 1,701 | 2,397
Segment Reconciling Items [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | [3] | 256 | 469
Interest expense |  | (7,533) | (7,170)
Unallocated Selling, General and Administrative Expenses [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Unallocated selling, general and administrative costs | [1] | $ (7,326) | $ (7,335)
[1] | Included in segment direct expenses and unallocated selling, general, and administrative costs are the depreciation and amortization expense amounts below: Depreciation and Amortization Expense Quarter Ended March 31, 2016 2015 Segment Direct Expense: Oil and Gas $ 9,918 $ 11,280 Air Medical 4,256 4,097 Technical Services 128 128 Total $ 14,302 $ 15,505 Unallocated SG&A $ 2,671 $ 2,646
[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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