Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued compensation	$ 25,281	$ 35,097
Accrued property and other taxes	23,790	32,190
Accrued severance and other charges	22,244	0
Income taxes	7,385	3,362
Accrued inventory	5,281	6,235
Accrued medical claims	4,141	3,218
Accrued purchase orders	5,562	8,081
Other	18,200	26,044
Total accrued and other current liabilities	$ 111,884	$ 114,227