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Business Segments - Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | $ (307,305) | $ (80,281) | $ (378,813) | $ (111,387)
Other operating (expenses) income, net | [1] | 252 | 771 | (83) | 10,321
Provision for bad debts |  |  |  | (3,594) |
Interest income |  | 1,693 | 817 | 4,481 | 4,600
Interest expense |  | (20,739) | (12,376) | (47,021) | (38,668)
Other |  | 119 | 281 | 328 | 666
Loss before income taxes |  | (326,232) | (91,559) | (421,025) | (144,789)
Corporate |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | (23,374) | (23,005) | (72,010) | (70,876)
Operating Segments | Contract Drilling |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | (169,528) | (42,704) | (131,817) | (60,058)
Operating Segments | Pressure Pumping |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | (42,962) | (1,487) | (76,138) | 44,539
Operating Segments | Directional Drilling |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | (32,501) | (8,995) | (43,458) | (21,586)
Other Operations |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) |  | $ (39,192) | $ (4,861) | $ (51,713) | $ (13,727)
[1] | Other operating income, net includes net gains associated with the disposal of assets related to corporate strategy decisions of the executive management group. Accordingly, the related gains have been excluded from the operating results of specific segments. This caption also includes certain legal-related expenses and settlements, net of insurance reimbursements.

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