Divestitures (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 30, 2021	Dec. 31, 2020	Dec. 31, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss (Gain) on divestitures					$ 24,225	$ (1,505)
Viper Mine | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss (Gain) on divestitures		$ (100)
Dal-Tex and Briar Branch Properties | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for sale				$ 0
Gain on disposal				$ 1,400
Knight Hawk
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest acquired		1.50%
Ownership interest		49.50%				49.50%
Knight Hawk | Knight Hawk | Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of ownership interest	49.50%
Notes receivable term			3 years
Notes receivable periodic payment receivable			$ 500		500
Notes Receivable, Related Parties			18,000		18,000
Consideration for sale			$ 20,000		38,000
Loss (Gain) on divestitures					$ 24,200
DTA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest							35.00%