Segment Data Segment Data - Disaggregated Revenues, Segment (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
Disaggregation of Revenue [Line Items] | ||||
Revenues | $ 216,412 | $ 236,262 | $ 427,885 | $ 463,555 |
Operating segments | Mats and integrated services | ||||
Disaggregation of Revenue [Line Items] | ||||
Revenues | 43,868 | 56,524 | 94,688 | 106,438 |
Operating segments | Mats and integrated services | Service revenues | ||||
Disaggregation of Revenue [Line Items] | ||||
Revenues | 19,909 | 24,447 | 41,059 | 45,751 |
Operating segments | Mats and integrated services | Rental revenues | ||||
Disaggregation of Revenue [Line Items] | ||||
Revenues | 17,675 | 20,938 | 39,255 | 39,750 |
Operating segments | Mats and integrated services | Product sales revenues | ||||
Disaggregation of Revenue [Line Items] | ||||
Revenues | $ 6,284 | $ 11,139 | $ 14,374 | $ 20,937 |