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Accounts Receivable - Balance and Activity in Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2016
Oct. 01, 2016
Dec. 31, 2017
Dec. 31, 2015
Successor        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Beginning balance $ 0   $ 880  
Additions charged to costs and expenses 880   397  
Deductions 0   (3)  
Impact of fresh start accounting 0   0  
Ending balance 880 $ 0 $ 1,274  
Predecessor        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Beginning balance $ 0 4,847   $ 7,083
Additions charged to costs and expenses   16,695   1,320
Deductions   (751)   (3,556)
Impact of fresh start accounting   (20,791)   0
Ending balance   $ 0   $ 4,847