Subsequent Events (Subsequent Events Phantom) (Details) - $ / shares		6 Months Ended
	Jul. 27, 2018	Jun. 30, 2018
Cash Distribution, Tranche One [Member] | Minimum [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)		$ 0.3163
Cash Distribution, Tranche One [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)	$ 1.2938
Cash Distribution, Tranche One [Member] | Maximum [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)		0.3438
Cash Distribution, Tranche One [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)	1.4063
Cash Distribution, Tranche Two [Member] | Minimum [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)		0.3438
Cash Distribution, Tranche Two [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Target distribution per unit requiring marginal percentage distribution to IDR Holders (in usd per unit)	1.4063
Cash Distribution, Tranche Two [Member] | Maximum [Member]
Subsequent Event [Line Items]
Quarterly incentive distribution, per unit, distribution threshold		0.4125
Cash Distribution, Tranche Two [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly incentive distribution, per unit, distribution threshold	1.6875
Cash Distribution, Tranche Three [Member] | Minimum [Member]
Subsequent Event [Line Items]
Quarterly incentive distribution, per unit, distribution threshold		$ 0.4125
Cash Distribution, Tranche Three [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly incentive distribution, per unit, distribution threshold	$ 1.6875