Revenue Recognition Revenue by Commodity and Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from Contract with Customer, Excluding Assessed Tax	$ 314,920	$ 307,409	$ 809,156	$ 967,464
Revenue year over year percentage change [Line Items]	2.40%		(16.40%)
Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 262,050	226,398
Revenue year over year percentage change [Line Items]	15.70%
Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 52,870	81,011
Revenue year over year percentage change [Line Items]	(34.70%)
Crude Oil [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 226,011	255,718
Revenue year over year percentage change [Line Items]	(11.60%)
Crude Oil [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 183,420	185,543
Revenue year over year percentage change [Line Items]	(1.10%)
Crude Oil [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 42,591	70,175
Revenue year over year percentage change [Line Items]	(39.30%)
Natural Gas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 41,899	26,562
Revenue year over year percentage change [Line Items]	57.70%
Natural Gas [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 39,759	23,949
Revenue year over year percentage change [Line Items]	66.00%
Natural Gas [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,140	2,613
Revenue year over year percentage change [Line Items]	(18.10%)
Natural Gas Liquids [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 47,010	25,129
Revenue year over year percentage change [Line Items]	87.10%
Natural Gas Liquids [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 38,871	16,906
Revenue year over year percentage change [Line Items]	129.90%
Natural Gas Liquids [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 8,139	$ 8,223
Revenue year over year percentage change [Line Items]	(1.00%)
Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 129,394	229,862
Revenue year over year percentage change [Line Items]			(43.70%)
Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 679,762	737,602
Revenue year over year percentage change [Line Items]			(7.80%)
Crude Oil [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 590,955	760,970
Revenue year over year percentage change [Line Items]			(22.30%)
Crude Oil [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 483,608	569,518
Revenue year over year percentage change [Line Items]			(15.10%)
Crude Oil [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 107,347	191,452
Revenue year over year percentage change [Line Items]			(43.90%)
Natural Gas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 112,462	110,072
Revenue year over year percentage change [Line Items]			2.20%
Natural Gas [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 109,279	100,779
Revenue year over year percentage change [Line Items]			8.40%
Natural Gas [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 3,183	9,293
Revenue year over year percentage change [Line Items]			(65.70%)
Natural Gas Liquids [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 105,739	96,422
Revenue year over year percentage change [Line Items]			9.70%
Natural Gas Liquids [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 86,875	67,305
Revenue year over year percentage change [Line Items]			29.10%
Natural Gas Liquids [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 18,864	$ 29,117
Revenue year over year percentage change [Line Items]			(35.20%)