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Long-Term Debt - Securities Purchase Agreement and Second Lien Notes - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Jan. 31, 2018
Dec. 31, 2016
Aug. 02, 2016
Debt Instrument [Line Items]            
Gain on warrants   $ 416 $ 3,088      
Class A Voting Common Stock            
Debt Instrument [Line Items]            
Warrants to purchase common stock         760,000  
Warrant liability         $ 5,100  
Second Lien Notes            
Debt Instrument [Line Items]            
Debt instrument face amount         38,000  
Repayment of principal second lien notes $ 17,000       $ 21,000  
Early payment premium $ 1,100          
8.750% Senior Notes Due April 15, 2019            
Debt Instrument [Line Items]            
Debt instrument interest rate   8.75% 8.75% 8.75%    
Debt instrument repurchase amount   $ 68,200        
Cash paid for repurchase of debt instrument   $ 36,200        
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021            
Debt Instrument [Line Items]            
Debt instrument interest rate           12.00%
Debt instrument issuance and sale description   (i) up to $49.9 million aggregate principal amount of LRAI’s 12% senior secured second lien notes due 2021 (the “Second Lien Notes”) and (ii) five-year warrants to purchase up to an aggregate 998,000 shares of the Company’s Class A voting common stock at a price equal to $5.00 per share (the “Warrants”).        
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021 | Class A Voting Common Stock            
Debt Instrument [Line Items]            
Warrants to purchase common stock price per share           $ 5.00
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021 | Maximum            
Debt Instrument [Line Items]            
Debt instrument face amount           $ 49,900
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021 | Maximum | Class A Voting Common Stock            
Debt Instrument [Line Items]            
Warrants to purchase common stock           998,000