Intangible Assets and Goodwill (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impairment Loss		$ 3,735,000	$ 0	$ 0
Amortization of Intangible Assets		$ 12,028,000	$ 0	$ 0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Finite-Lived Intangible Assets, Gross		$ 240,570,000
Finite-Lived Intangible Assets, Accumulated Amortization		(12,028,000)
Finite-Lived Intangible Assets, Net		$ 228,542,000
Acquired rights [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	[1]	10 years
Finite-Lived Intangible Assets, Gross	[1]	$ 216,690,000.000
Finite-Lived Intangible Assets, Accumulated Amortization	[1]	(10,834,000.000)
Finite-Lived Intangible Assets, Net	[1]	$ 205,856,000.000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	[1]	10 years
Finite-Lived Intangible Assets, Gross	[1]	$ 23,880,000.000
Finite-Lived Intangible Assets, Accumulated Amortization	[1]	(1,194,000.000)
Finite-Lived Intangible Assets, Net	[1]	$ 22,686,000.000

[1] 1 We acquired certain intangible assets as part of the Noden Transaction, as described further in Note 19.