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Summary of Significant Accounting Policies and Other Information - Schedule of Prepaid Expense and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]                    
Insurance proceeds receivable $ 10,563       $ 8,500       $ 0 $ 0
Prepaid expenses 3,710       4,072       2,578 4,840
Other 86       1,072       125 0
Total $ 14,359 $ 14,536 $ 12,453 $ 15,291 $ 13,644 $ 5,146 $ 4,026 $ 4,132 $ 2,703 $ 4,840