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Accrued Expenses (Tables) | 6 Months Ended
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Jun. 30, 2013
Accrued Expenses | Accrued expenses consisted of the following at June 30, 2013 and December 31, 2012 (in thousands):
|  | June 30, 2013 |  |  | December 31, 2012 |
Salaries, wages, payroll taxes and benefits |  | $ | 50,667 |  |  | $ | 55,430 |
Workers’ compensation liability |  |  | 68,346 |  |  |  | 68,441 |
Property, sales, use and other taxes |  |  | 8,692 |  |  |  | 9,749 |
Insurance, other than workers’ compensation |  |  | 5,427 |  |  |  | 10,419 |
Accrued interest payable |  |  | 7,590 |  |  |  | 7,664 |
Deferred revenue—current |  |  | — |  |  |  | 1,523 |
Other |  |  | 5,379 |  |  |  | 5,406 |
|  | $ | 146,101 |  |  | $ | 158,632 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration