v3.26.1
Note 1 - Partnership Organization (Details Textual)
shares in Millions
6 Months Ended
Apr. 24, 2017
USD ($)
shares
Jul. 09, 2013
USD ($)
Jun. 30, 2026
Partners' Capital Account, Contributions   $ 1,000  
Partners' Capital Account, Units, Sold in Public Offering (in shares) | shares 19    
Partners' Capital Account, Public Sale of Units $ 374,200,000    
Partners' Capital Account, Public Sale of Units Net of Offering Costs $ 349,600,000    
Mountrail County, North Dakota [Member]      
Gas and Oil Area Developed Net 1     24.00%
Mountrail County, North Dakota [Member] | Oil [Member]      
Oil and Gas, Productive Well, Gross, Number     308