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Subsequent Events (Details)
$ / shares in Units, $ in Thousands
Aug. 06, 2020
USD ($)
Jul. 01, 2020
$ / shares
shares
Jun. 30, 2020
$ / shares
Dec. 31, 2019
$ / shares
Subsequent Events        
Common stock, par value (in dollars per share)     $ 0.001 $ 0.001
Subsequent Event | Royalty Interest of Wells from SandRidge Mississippian Trust II        
Subsequent Events        
Asset Acquisition, Right Of First Refusal, Potential Assets Acquired, Value, Gross | $ $ 5,250      
Asset Acquisition, Right Of First Refusal, Potential Assets Acquired, Value, Net | $ $ 3,280      
Asset Acquisition, Right of First Refusal, Ownership Percentage 0.376      
Subsequent Event | The Tax Benefits Preservation Plan        
Subsequent Events        
Number of Rights per Outstanding Share of Common Stock | shares   1    
Common stock, par value (in dollars per share)   $ 0.001    
Preferred stock, par value (in dollars per share)   $ 0.001    
Subsequent Event | The Tax Benefits Preservation Plan | Preferred Stock        
Subsequent Events        
Class of warrant or right, fractional number of securities called by each warrant or right (in shares) | shares   0.001    
Exercise price (in usd per share)   $ 5.00