Related Party Transactions - Narrative (Details) - Employee - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Purchases from related party	$ 0.5	$ 0.8	$ 1.3	$ 2.0
Outstanding payables to related parties	$ 0.2		$ 0.2		$ 0.6