Gathering And Transportation Assets (DDA and Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Amortization of intangible assets	$ 3,365	$ 3,363
Depreciation, depletion and amortization	$ 1,774	2,098
Furniture and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Furniture and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	15 years
Gathering Facilities | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	36 years
Transportation assets | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	40 years
Gathering and Transportation Related Assets
Property, Plant and Equipment [Line Items]
Depreciation, depletion and amortization	$ 1,774	1,781
Oil and Natural Gas-Related Assets and Gathering and Transportation-Related Assets
Property, Plant and Equipment [Line Items]
Depreciation, depletion and amortization	$ 5,139	$ 5,144