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Accrued Expenses (Tables) | 6 Months Ended
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Jun. 30, 2012
Accrued Expenses | Accrued expenses consisted of the following at June 30, 2012 and December 31, 2011 (in thousands):
|  | June 30, 2012 |  |  | December 31, 2011 |
Salaries, wages, payroll taxes and benefits |  | $ | 49,198 |  |  | $ | 58,692 |
Workers’ compensation liability |  |  | 66,214 |  |  |  | 66,121 |
Property, sales, use and other taxes |  |  | 13,776 |  |  |  | 11,850 |
Insurance, other than workers’ compensation |  |  | 8,789 |  |  |  | 6,012 |
Accrued interest payable |  |  | 5,196 |  |  |  | 4,937 |
Deferred revenue - current |  |  | 5,137 |  |  |  | 7,229 |
2009 Performance Unit Awards |  |  | — |  |  |  | 3,640 |
Other |  |  | 5,072 |  |  |  | 6,148 |
|  | $ | 153,382 |  |  | $ | 164,629 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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