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Accrued Expenses (Tables) | 6 Months Ended
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Jun. 30, 2014
Accrued Expenses | Accrued expenses consisted of the following at June 30, 2014 and December 31, 2013 (in thousands):
|  | June 30, 2014 |  |  | December 31, 2013 |
Salaries, wages, payroll taxes and benefits |  | $ | 54,822 |  |  | $ | 45,836 |
Workers’ compensation liability |  |  | 77,933 |  |  |  | 74,975 |
Property, sales, use and other taxes |  |  | 12,226 |  |  |  | 12,367 |
Insurance, other than workers’ compensation |  |  | 10,654 |  |  |  | 10,129 |
Accrued interest payable |  |  | 7,585 |  |  |  | 7,604 |
Other |  |  | 9,355 |  |  |  | 9,546 |
|  | $ | 172,575 |  |  | $ | 160,457 |

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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