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Accrued and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Payables and Accruals [Abstract]    
Accrued compensation $ 18,737 $ 25,281
Accrued property and other taxes 21,990 23,790
Accrued severance and other charges 19,799 22,244
Income taxes 8,681 7,385
Accrued inventory 1,016 5,281
Accrued medical claims 4,102 4,141
Accrued purchase orders 10,537 5,562
Other 17,735 18,200
Total accrued and other current liabilities $ 102,597 $ 111,884