Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Accrued Liabilities    
Salaries, wages, and commissions $ 19,219 $ 20,684
Insurance reserves 21,511 20,410
Significant legal settlement 30,000  
Other 28,917 23,305
Total Accrued Liabilities $ 99,647 $ 64,399