Subsequent Events (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 29, 2016	Apr. 04, 2016	Feb. 16, 2016
Subsequent Event [Line Items]
Stock exchange minimum market value	$ 1
Number of shares of Class A common stock converted for each share of Preferred Stock	2.80		2.44
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of shares of Class A common stock converted for each share of Preferred Stock		2.80