Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 2,921	$ 2,768
Account receivable	11,844	10,018
Prepaid expenses	856	1,220
Total current assets	15,621	14,006
Royalty interests in oil and natural gas properties, net of accumulated amortization of $163,102 and $159,678 respectively	190,120	193,544
Property and equipment, net	296	322
Deferred tax asset, net	51,655	52,135
Other assets	1,344	1,834
Total assets	259,036	261,841
Current liabilities:
Accounts payable and accrued expenses	6,463	3,471
Other current liabilities	199	502
Total current liabilities	6,662	3,973
Credit facility	38,000	40,000
Warrant liability	8,225	3,036
Other non-current liabilities	415	576
Total liabilities	53,302	47,585
Commitments and contingencies (See Note 14)
Shareholders' equity:
Preferred stock, $0.0001 par value; 1,000,000 shares authorized; none issued and outstanding
Additional paid in capital	121,349	121,029
Non-controlling interests	82,697	83,586
Retained earnings	1,679	9,632
Total shareholders' equity	205,734	214,256
Total liabilities and shareholders' equity	259,036	261,841
Class A common stock [Member]
Shareholders' equity:
Common stock, value	5	5
Class C common stock [Member]
Shareholders' equity:
Common stock, value	$ 4	$ 4