Basis of Presentation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Mar. 25, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Accounting Policies [Abstract]
Equity commitment amount	$ 200.0
Preferred units issued (in units)	100,000
Face value per unit (in usd per unit)	$ 1,000
Proceeds from issuance	$ 100.0
Offering costs	3.3
Remaining equity commitment	$ 100.0
Dividend rate	6.50%
Operating lease, weighted average discount rate		3.69%
Finance lease, weighted average discount rate		2.80%
Accumulated Amortization		$ 29.6		$ 37.5
Amortization expense		$ 5.3	$ 8.0
Weighted average amortization period		11 years