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Supplementary Information - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2011
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| Supplemental Financial Information [Line Items] | ||
| Deferred mobilization fees | $ 1.6 | $ 2.2 |
| Accrued interest expense | 9.7 | 8.1 |
| Worker's compensation liabilities | 2.3 | 3.0 |
| Accrued payroll and payroll taxes | 26.0 | 26.8 |
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Other Long Term Obligations [Member]
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| Supplemental Financial Information [Line Items] | ||
| Worker's compensation liabilities | $ 2.5 | $ 3.6 |
| X | ||||||||||
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- Definition
Accrued Interest Expense Payable No definition available.
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| X | ||||||||||
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- Definition
Deferred Mobilization Fees No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Workers Compensation Liability Accruals No definition available.
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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