Related Parties - Additional Information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Related Party Transaction [Line Items] | |||
| Debt instrument aggregate principle amount | $ 873,733,000 | $ 1,200,000,000 | |
| Airplane Services | |||
| Related Party Transaction [Line Items] | |||
| Related party transactions | 1,100,000 | 1,100,000 | $ 900,000 |
| Directional Drilling Services | |||
| Related Party Transaction [Line Items] | |||
| Related party transactions | 0 | 0 | 200,000 |
| CEO and Largest Shareholder | Second Lien Term Loan | |||
| Related Party Transaction [Line Items] | |||
| Debt instrument aggregate principle amount | 5,000,000 | ||
| Maximum | Marine Transportation and Logistic Services | |||
| Related Party Transaction [Line Items] | |||
| Related party transactions | $ 200,000 | $ 200,000 | $ 200,000 |
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|