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Accrued Expenses and Other Current Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Other Liabilities Disclosure [Abstract]    
Payroll and related employee benefits $ 34,676 $ 42,364
Accrued insurance 49,073 39,868
Performance guarantees 54,488 30,727
Loss job reserves 12,130 11,605
Other 46,875 45,415
Total $ 197,242 $ 169,979