Quarterly report pursuant to Section 13 or 15(d)

Royalty Interests (Details)

v3.20.1
Royalty Interests (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
a
$ / a
Mar. 31, 2019
USD ($)
a
$ / a
Dec. 31, 2019
USD ($)
Net Book Value      
Royalty interests acquired, net of accumulated depletion of $318 and $260 as of March 31, 2020 and December 31, 2019, respectively $ 46,256   $ 29,320
Total royalty interests, gross 46,256   29,320
Less: accumulated depletion (318)   (260)
Total royalty interests, net 45,938   $ 29,060
Acquisition of royalty interests $ 16,936 $ 3,418  
Royalty interest rate 12.50%    
1/16th nonparticipating perpetual royalty interests      
Real Estate Properties [Line Items]      
Nonparticipating perpetual royalty interest rate 6.25%   6.25%
Net Book Value      
1/16th nonparticipating perpetual royalty interest $ 0   $ 0
1/128th nonparticipating perpetual royalty interests      
Real Estate Properties [Line Items]      
Nonparticipating perpetual royalty interest rate 0.78125%   0.78125%
Net Book Value      
1/128th nonparticipating perpetual royalty interest $ 0   $ 0
Additional real estate acquisitions      
Net Book Value      
Net royalty interests (acre) | a 1,017 301  
Acquisition of royalty interests $ 16,900 $ 3,200  
Average price per net royalty acre acquired (in dollars per acre) | $ / a 16,659 10,500