Transactions with Major Customers and Concentration of Credit Risk - Schedule of Accounts Receivable from Third Party Customers (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Customer B
Concentration Risk [Line Items]
Accounts receivable, net	$ 3.2	$ 3.4
Customer C
Concentration Risk [Line Items]
Accounts receivable, net	6.3	7.2
Customer D
Concentration Risk [Line Items]
Accounts receivable, net	$ 3.5	$ 3.9