Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Reimbursement Agreements termination period by either party	90 days
Insurance program renewal period	5 years
Insurance program renewal term period	January 31, 2012 through January 31, 2017
Reimbursement Agreement
Related Party Transaction [Line Items]
Reimbursements from (to) related party	$ (2.3)	$ (3.8)
Due from Related Parties	$ 0.1		$ 0.0