Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Related Party Transactions (Textual) [Abstract]
Reimbursement Agreements termination period by either party	90 days
Net activity under reimbursement agreement	$ 0.8	$ 0.4
Partial pre-payment for premiums related to the D&O Insurance Program	14.6
Insurance program renewal term period	January 31, 2012 through January 31, 2017
Insurance Program Renewal Period	5 years
Costs reimbursable under reimbursement agreement	13.8
Receivable from Related Party	$ 12.6