Annual report pursuant to Section 13 and 15(d)

Leased Properties and Leases - Pinedale LGS Acquisition (Details)

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Leased Properties and Leases - Pinedale LGS Acquisition (Details)
Dec. 29, 2017
USD ($)
Pinedale LP [Member]  
Noncontrolling Interest [Line Items]  
Controlling economic interest 100.00%
Pinedale LP [Member] | Pinedale LP I [Member]  
Noncontrolling Interest [Line Items]  
Purchase price $ 32,900,000
Contingent consideration 100,000
Fair value in excess of carrying value $ 5,600,000
Pinedale Liquids Gathering System [Member] | Limited Partner [Member] | Prudential [Member]  
Noncontrolling Interest [Line Items]  
Noncontrolling economic interest 18.95%
Noncontrolling interest at carrying value $ 27,300,000
Amended Pinedale Term Credit Facility [Member] | Pinedale LP [Member]  
Noncontrolling Interest [Line Items]  
Debt instrument term 5 years
Face amount $ 41,000,000.0
Coupon rate percentage 6.50%