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Accrued and Other Liabilities - Accrued LIabilities and Other (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Other Liabilities Disclosure [Abstract]    
Sales and property taxes payable $ 6,835 $ 1,055
Severance accrual, current portion 5,625 0
Asset retirement obligations, current portion 8,063 0
Other current liabilities 11,010 6,584
Accrued liabilities and other $ 31,533 $ 7,639