Quarterly report pursuant to Section 13 or 15(d)

Reportable Segments - Results of Operations by Segment (Detail)

v3.19.2
Reportable Segments - Results of Operations by Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2018
Revenues:        
Revenues $ 156,031 $ 157,397 $ 118,603 $ 228,278
Operating gross margin:        
Total operating gross margin (loss) 22,991 11,424 (167) (10,575)
General and administrative expense (5,610) (8,147) (8,288) (14,489)
Gain (loss) on disposition of assets, net (53) 384 (478) (135)
Reorganization items (962) (92,977) 0 0
Total operating income (loss) 16,366 (89,316) (8,933) (25,199)
Interest expense (7,663) (274) (11,197) (22,437)
Interest income 374 8 30 53
Other (644) (10) (1,191) (900)
Income (loss) before income taxes 8,433 (89,592) (21,291) (48,483)
Reimbursable revenue        
Revenues:        
Revenues 18,465 28,541   27,036
Exxon Neftegas Limited | Reimbursable revenue        
Revenues:        
Revenues $ 16,900 $ 26,300   $ 22,600
Exxon Neftegas Limited | Customer Concentration Risk | Sales Revenue, Net        
Operating gross margin:        
Percentage of revenue from major customer 26.90% 31.20%   26.30%
Exxon Neftegas Limited | Customer Concentration Risk | Sales Revenue, Net | Reimbursable revenue        
Operating gross margin:        
Percentage of revenue from major customer 18.30% 17.70%    
Exxon Neftegas Limited | Customer Concentration Risk | Sales Revenue, Net Of Reimbursable Revenues | Reimbursable revenue        
Operating gross margin:        
Percentage of revenue from major customer       18.60%
Total rental tools services        
Revenues:        
Revenues $ 75,091 $ 73,704 62,018 $ 114,243
Operating gross margin:        
Total operating gross margin (loss) 18,572 13,708 7,411 7,623
U.S. rental tools        
Revenues:        
Revenues 52,936 52,595 42,083 76,831
Operating gross margin:        
Total operating gross margin (loss) 17,871 17,289 11,302 15,530
International rental tools        
Revenues:        
Revenues 22,155 21,109 19,935 37,412
Operating gross margin:        
Total operating gross margin (loss) 701 (3,581) (3,891) (7,907)
Total drilling services        
Revenues:        
Revenues 80,940 83,693 56,585 114,035
Operating gross margin:        
Total operating gross margin (loss) 4,419 (2,284) (7,578) (18,198)
U.S. (lower 48) drilling        
Revenues:        
Revenues 12,479 6,627 3,283 4,637
Operating gross margin:        
Total operating gross margin (loss) 980 (1,508) (3,751) (9,041)
International & Alaska drilling        
Revenues:        
Revenues 68,461 77,066 53,302 109,398
Operating gross margin:        
Total operating gross margin (loss) $ 3,439 $ (776) $ (3,827) $ (9,157)
International & Alaska drilling | Exxon Neftegas Limited        
Operating gross margin:        
Percentage of revenue from major customer 61.40%      
International & Alaska drilling | Exxon Neftegas Limited | Reimbursable revenue        
Operating gross margin:        
Percentage of revenue from major customer 49.60%      
International & Alaska drilling | Exxon Neftegas Limited | Customer Concentration Risk | Sales Revenue, Net        
Operating gross margin:        
Percentage of revenue from major customer   63.80%   54.90%
International & Alaska drilling | Exxon Neftegas Limited | Customer Concentration Risk | Sales Revenue, Net Of Reimbursable Revenues        
Operating gross margin:        
Percentage of revenue from major customer   46.60%   45.40%