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Business Segments - Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | $ (159,084) |  | $ (48,125) | $ (653,494) | $ (71,508)
Credit loss expense | (4,551) | $ (1,055) | (3,594) | (5,606) | (3,594)
Interest income | 334 |  | 1,756 | 991 | 2,788
Interest expense | (10,984) |  | (13,298) | (22,208) | (26,282)
Other | 85 |  | 92 | 170 | 209
Loss before income taxes | (169,649) |  | (59,575) | (674,541) | (94,793)
Corporate |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | (30,497) |  | (34,010) | (54,982) | (48,971)
Operating Segments | Contract Drilling |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | (30,742) |  | 16,494 | (434,760) | 37,711
Operating Segments | Pressure Pumping |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | (68,554) |  | (14,408) | (104,040) | (33,176)
Operating Segments | Directional Drilling |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | (14,385) |  | (5,290) | (24,980) | (10,957)
Other Operations |  |  |  |  |
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] |  |  |  |  |
Operating income (loss) | $ (10,355) |  | $ (7,317) | $ (29,126) | $ (12,521)

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