Other Significant Transactions - Other Narrative Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
	Feb. 28, 2015	Jul. 06, 2012	May 07, 2012	Apr. 05, 2012
Sale of intangible assets [Line Items]
Disposition of Intangible Assets, Quarterly Earn-Out Payment	$ 0.5
Wrks Fm Intellectual Property [Member]
Sale of intangible assets [Line Items]
Purchase Price of Intellectual Property Rights				10.0
Incremental Gross Revenue Percentage				15.00%
Gain (Loss) on Disposition of Other Assets			10.0
Proceeds from Sale of Productive Assets		$ 10.0