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BUSINESS SEGMENT INFORMATION - Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Revenues: |  |  |  |
Revenues | $ 89,300 | $ 358,516 | $ 333,077 | $ 693,172
Operating (loss) income: |  |  |  |
Operating (loss) income | (37,530) | 8,387 | (256,237) | 6,226
Capital expenditures |  |  | 38,659 | 132,253
Depreciation and amortization | 19,573 | 42,881 | 58,866 | 85,386
Identifiable assets | 782,868 | 1,223,967 | 782,868 | 1,223,967
Impairment and other charges | (1,639) | 0 | (207,175) | 0
Gain on disposition of assets, net | 3,194 | 1,133 | 4,013 | 4,637
Interest expense | 71 | 164 | 184 | 253
Interest income | 68 | 594 | 402 | 1,394
Other (expense) income , net | (1,481) | (53) | (1,789) | 392
(Loss) income before income taxes | (39,014) | 8,764 | (257,808) | 7,759
Technical Services |  |  |  |
Revenues: |  |  |  |
Revenues | 80,532 | 338,034 | 308,232 | 652,113
Operating (loss) income: |  |  |  |
Operating (loss) income | (34,100) | 6,850 | (46,307) | 2,392
Capital expenditures |  |  | 31,296 | 125,171
Depreciation and amortization |  |  | 54,615 | 80,370
Identifiable assets | 474,670 | 1,030,073 | 474,670 | 1,030,073
Support Services |  |  |  |
Revenues: |  |  |  |
Revenues | 8,768 | 20,482 | 24,845 | 41,059
Operating (loss) income: |  |  |  |
Operating (loss) income | (1,846) | 4,018 | (299) | 7,155
Capital expenditures |  |  | 7,027 | 6,260
Depreciation and amortization |  |  | 4,111 | 4,856
Identifiable assets | 62,867 | 86,928 | 62,867 | 86,928
Corporate |  |  |  |
Operating (loss) income: |  |  |  |
Operating (loss) income | (3,139) | (3,614) | (6,469) | (7,958)
Capital expenditures |  |  | 336 | 822
Depreciation and amortization |  |  | 140 | 160
Identifiable assets | $ 245,331 | $ 106,966 | 245,331 | $ 106,966
Impairment and other charges |  |  | $ 541 |

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