Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	5 Months Ended	7 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2012 Chief Executive Officer [Member]	Dec. 31, 2012 Chief Executive Officer [Member]	Jun. 30, 2013 UMG [Member]	Jun. 30, 2013 UMG [Member]
Related Party Transaction [Line Items]
Maximum Usage Of Aircraft Travel Hours	46 hours	32 hours
Related Party Transaction, Expenses From Transactions With Related Party, Amounts Capitalized			$ 0.3	$ 0.3