XML 78 R62.htm IDEA: XBRL DOCUMENT v3.10.0.1
Long-term Debt and Lease Obligations - Narrative (Details)
12 Months Ended
Aug. 16, 2018
USD ($)
Apr. 28, 2016
USD ($)
Dec. 31, 2018
USD ($)
Aug. 15, 2018
USD ($)
Dec. 31, 2017
USD ($)
May 31, 2013
Debt Instrument [Line Items]            
Aggregate principal amount of debt     $ 121,741,000   $ 156,744,000  
Minimum            
Debt Instrument [Line Items]            
Interest accrues under the capital leases     4.32%      
Maximum            
Debt Instrument [Line Items]            
Interest accrues under the capital leases     8.70%      
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC)            
Debt Instrument [Line Items]            
Debt term 4 years          
Amount of increase in maximum revolver $ 10,000,000          
Maximum amount of certain indebtedness 50,000,000   $ 50,000,000 $ 40,000,000    
Current borrowing capacity     41,900,000      
Indebtedness under the Credit Facility     0      
Required liquidity maintained five consecutive business days 6,250,000   7,500,000      
Required liquidity maintained any business day 5,000,000   $ 6,500,000      
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | Subsidiary Issuer            
Debt Instrument [Line Items]            
Percentage of obligations secured by stock of Subsidiary Borrowers   100.00%        
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | Minimum            
Debt Instrument [Line Items]            
Fixed charge coverage ratio     1.1      
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | GX Geoscience Corporation, S. De R.L. De C.V. [Member]            
Debt Instrument [Line Items]            
Maximum amount of certain indebtedness $ 5,000,000          
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | ION International Holdings L.P.            
Debt Instrument [Line Items]            
Percentage of obligations secured by stock of Subsidiary Borrowers   65.00%        
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | Base Rate | Minimum            
Debt Instrument [Line Items]            
Basis spread on variable rate 2.00%          
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | Base Rate | Maximum            
Debt Instrument [Line Items]            
Basis spread on variable rate 3.00%          
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | LIBOR | Minimum            
Debt Instrument [Line Items]            
Basis spread on variable rate 3.00%          
Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a) | PNC Bank, National Association (PNC) | LIBOR | Maximum            
Debt Instrument [Line Items]            
Basis spread on variable rate 4.00%          
Senior secured notes            
Debt Instrument [Line Items]            
Stated rate on debt           8.125%
Senior secured notes | Senior secured third-priority lien notes (redeemed March 26, 2018)            
Debt Instrument [Line Items]            
Aggregate principal amount of debt   $ 28,500,000        
Senior secured notes | Senior secured second-priority lien notes (maturing December 15, 2021)            
Debt Instrument [Line Items]            
Stated rate on debt   9.125%     9.125%  
Aggregate principal amount of debt   $ 120,600,000        
E&P Technology & Services | Data Library | Line of credit | Revolving credit facility (amended August 16, 2018, maturing August 16, 2023) (a)            
Debt Instrument [Line Items]            
Maximum amount of certain indebtedness $ 28,500,000     $ 15,000,000