General - Additional Information (Detail) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2015
USD ($)
country
|
Jun. 30, 2014
USD ($)
|
Jun. 30, 2015
USD ($)
country
|
Jun. 30, 2014
USD ($)
|
Dec. 31, 2014
USD ($)
country
|
|
| Revenue, Major Customer [Line Items] | |||||
| Number of Countries in Which Entity Has Operated Since Inception | country | 50 | 50 | |||
| Number of countries in which entity operates | country | 23 | ||||
| Payments to Acquire Property, Plant, and Equipment | $ 54,605 | $ 106,188 | |||
| Percentage accounted for under the equity method | 50.00% | 50.00% | |||
| Reimbursable Costs | $ 27,800 | $ 21,800 | $ 47,500 | $ 38,200 | |
| Deposits in domestic bank | 66,800 | 66,800 | $ 59,300 | ||
| Deposits, Foreign | 51,700 | $ 51,700 | $ 54,400 | ||
| Proceeds from Divestiture of Interest in Joint Venture | $ 900 | ||||
| Exxon Neftegas Limited [Member] | |||||
| Revenue, Major Customer [Line Items] | |||||
| Percentage of revenue from major customer | 26.00% | 17.90% | |||
| X | ||||||||||
- Definition Number Of Countries In Which Entity Has Operated Since Inception No definition available.
|
| X | ||||||||||
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. No definition available.
|
| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The aggregate of all foreign interest-bearing and noninterest-bearing deposit liabilities. 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 | ||||||||||
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of countries in which the entity operates as of balance sheet date. No definition available.
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|