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) - USD ($)
$ in Millions
Dec. 29, 2017
Dec. 31, 2018
Pinedale LP    
Noncontrolling Interest [Line Items]    
Difference in fair value of purchase consideration and carrying amount   $ 5.6
Controlling economic interest 100.00%  
Pinedale LP | Pinedale LP I    
Noncontrolling Interest [Line Items]    
Purchase price $ 32.9  
Pinedale LGS | Limited Partner | Prudential    
Noncontrolling Interest [Line Items]    
Ownership percentage 18.95%  
Noncontrolling economic interest $ 27.3