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Subsequent Events - Additional Information (Detail) - Subsequent Event
shares in Millions
May 09, 2018
USD ($)
shares
Apr. 25, 2018
USD ($)
Apr. 01, 2018
MBbls
MMcf
Arkoma and Williston      
Subsequent Event [Line Items]      
Approximate shares to be issued for oil and gas properties | shares 88.6    
Oil and gas properties estimated fair value $ 620,000,000    
Approximate ownership percentage of pro forma outstanding shares 84.00%    
Effective date of acquisition of properties     Apr. 01, 2018
Estimated oil proved reserves | MBbls     22,500
Estimated gas proved reserves | MMcf     48,500
Strategic Drilling Venture | Arkoma      
Subsequent Event [Line Items]      
Percentage of Comstock's carried interest for projects that Arkoma participates in   20.00%  
New venture term   2 years  
Minimum opportunities offering amount in first twelve months   $ 75,000,000  
Minimum opportunities offering amount in second twelve months   100,000,000  
New venture investment   $ 34,000,000