Related Party Transactions - Additional Information (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
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	$ 3.8	$ 6.1