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Debt - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 02, 2019
Oct. 05, 2018
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Debt Instrument [Line Items]          
Carrying Value of Debt     $ 36,322   $ 66,356
Rights offering, aggregate offering price   $ 32,500      
Payments on bridge term loan     31,382 $ 0  
Rights Offering | Common Stock          
Debt Instrument [Line Items]          
Rights offering, aggregate offering price $ 31,400        
First Lien Term Loan          
Debt Instrument [Line Items]          
Carrying Value of Debt     20,803   21,905
Second Lien Term Loan          
Debt Instrument [Line Items]          
Carrying Value of Debt     10,066   10,066
Vehicle Financings          
Debt Instrument [Line Items]          
Carrying Value of Debt     5,453   1,885
Vehicle Financings | Appalachian Water Services          
Debt Instrument [Line Items]          
Carrying Value of Debt     5,500    
Bridge Term Loan          
Debt Instrument [Line Items]          
Carrying Value of Debt     $ 0   $ 32,500
Bridge loan   32,500      
Conversion of loan to common stock 1,100        
Payments on bridge term loan $ 31,400        
Bridge Term Loan Credit Agreement - Portion Used to Fund Acquisition          
Debt Instrument [Line Items]          
Bridge loan   22,500      
Bridge Term Loan Credit Agreement - Portion Used To Pay Down Second Lien Term Loan          
Debt Instrument [Line Items]          
Repayments of debt   $ 10,000      
Two Largest Shareholders          
Debt Instrument [Line Items]          
Percentage of stock held by largest shareholders   90.00%