Equity Method Investments - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Red River
Schedule of Equity Method Investments [Line Items]
Current Assets	$ 29,016		$ 9,278
Non-current Assets	399,736		381,778
Current liabilities	15,725		8,291
Revenues	10,096	$ 11,262
Gross profit	5,887	5,275
Net income	5,721	4,710
Andeavor Logistics
Schedule of Equity Method Investments [Line Items]
Revenues	15,447	9,114
Gross profit	10,636	4,896
Net income	10,158	$ 4,417
Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Current Assets	24,508		29,476
Non-current Assets	260,871		262,300
Current liabilities	$ 3,181		$ 6,391