Revenue Recognition Revenue by Commodity and Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from Contract with Customer, Excluding Assessed Tax	$ 173,921	$ 338,956	$ 494,236	$ 660,055
Revenue year over year percentage change [Line Items]	(48.70%)		(25.10%)
Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 145,745	256,354
Revenue year over year percentage change [Line Items]	(43.10%)
Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 28,176	82,602
Revenue year over year percentage change [Line Items]	(65.90%)
Crude Oil [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 115,771	274,168
Revenue year over year percentage change [Line Items]	(57.80%)
Crude Oil [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 93,540	203,548
Revenue year over year percentage change [Line Items]	(54.00%)
Crude Oil [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 22,231	70,620
Revenue year over year percentage change [Line Items]	(68.50%)
Natural Gas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 31,048	31,039
Revenue year over year percentage change [Line Items]	0.00%
Natural Gas [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 29,443	30,129
Revenue year over year percentage change [Line Items]	(2.30%)
Natural Gas [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,605	910
Revenue year over year percentage change [Line Items]	76.40%
NGL [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 27,102	33,749
Revenue year over year percentage change [Line Items]	(19.70%)
NGL [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax	$ 22,762	22,677
Revenue year over year percentage change [Line Items]	0.40%
NGL [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,340	$ 11,072
Revenue year over year percentage change [Line Items]	(60.80%)
Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 76,523	148,851
Revenue year over year percentage change [Line Items]			(48.60%)
Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 417,713	511,204
Revenue year over year percentage change [Line Items]			(18.30%)
NGL [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 58,729	71,293
Revenue year over year percentage change [Line Items]			(17.60%)
NGL [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 48,004	50,399
Revenue year over year percentage change [Line Items]			(4.80%)
NGL [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 10,725	20,894
Revenue year over year percentage change [Line Items]			(48.70%)
Natural Gas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 70,562	83,511
Revenue year over year percentage change [Line Items]			(15.50%)
Natural Gas [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 69,520	76,831
Revenue year over year percentage change [Line Items]			(9.50%)
Natural Gas [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 1,042	6,680
Revenue year over year percentage change [Line Items]			(84.40%)
Crude Oil [Member]
Revenue from Contract with Customer, Excluding Assessed Tax			$ 364,945	505,251
Revenue year over year percentage change [Line Items]			(27.80%)
Crude Oil [Member] | Wattenberg Field
Revenue from Contract with Customer, Excluding Assessed Tax			$ 300,189	383,974
Revenue year over year percentage change [Line Items]			(21.80%)
Crude Oil [Member] | Delaware Basin
Revenue from Contract with Customer, Excluding Assessed Tax			$ 64,756	$ 121,277
Revenue year over year percentage change [Line Items]			(46.60%)