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Long-term Debt - Narrative (Details) - Revolving credit facility - USD ($)
9 Months Ended
Aug. 16, 2018
Sep. 30, 2020
Second Lien Notes    
Debt Instrument    
Stated rate on debt (percent) 9.125%  
Line of credit | Data Library | E&P Technology & Services    
Debt Instrument    
Maximum amount of certain indebtedness $ 28,500,000  
Line of credit | PNC Bank, national association (PNC)    
Debt Instrument    
Maximum amount of certain indebtedness 50,000,000.0  
Outstanding amount of certain indebtedness   $ 22,500,000
Remaining borrowing amount   $ 8,300,000
Required liquidity maintained five consecutive business days 6,250,000  
Required liquidity maintained any business day $ 5,000,000.0  
Line of credit | PNC Bank, national association (PNC) | Subsidiary issuer    
Debt Instrument    
Percentage of obligations secured by stock of Subsidiary Borrowers (percent)   100.00%
Line of credit | PNC Bank, national association (PNC) | Minimum    
Debt Instrument    
Fixed charge coverage ratio 1.1  
Line of credit | PNC Bank, national association (PNC) | Base Rate | Maximum    
Debt Instrument    
Basis spread on variable rate for debt (percent) 3.00%  
Line of credit | PNC Bank, national association (PNC) | Base Rate | Minimum    
Debt Instrument    
Basis spread on variable rate for debt (percent) 2.00%  
Line of credit | PNC Bank, national association (PNC) | LIBOR | Maximum    
Debt Instrument    
Basis spread on variable rate for debt (percent) 4.00%  
Line of credit | PNC Bank, national association (PNC) | LIBOR | Minimum    
Debt Instrument    
Basis spread on variable rate for debt (percent) 3.00%  
Line of credit | PNC Bank, national association (PNC) | Mexican subsidiary    
Debt Instrument    
Maximum amount of certain indebtedness $ 5,000,000.0  
Line of credit | PNC Bank, national association (PNC) | ION international holdings L.P.    
Debt Instrument    
Percentage of obligations secured by stock of Subsidiary Borrowers (percent)   65.00%