CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Aug. 31, 2013	Feb. 28, 2013
Class A Common Stock
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	170,000,000	170,000,000
Common stock, shares issued	36,794,152	35,907,925
Common stock, shares outstanding	36,794,152	35,907,925
Class B Common Stock
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	4,722,684	4,722,684
Common stock, shares outstanding	4,722,684	4,722,684
Series A preferred stock
Series A non-cumulative convertible preferred stock, par value	$ 0.01	$ 0.01
Series A non-cumulative convertible preferred stock, liquidation preference	$ 50.00	$ 50.00
Series A non-cumulative convertible preferred stock, aggregate liquidation preference and redemption amount	$ 46,450	$ 46,882
Series A non-cumulative convertible preferred stock, shares authorized	2,875,000	2,875,000
Series A non-cumulative convertible preferred stock, shares issued	1,328,991	1,337,641
Series A non-cumulative convertible preferred stock, shares outstanding	1,328,991	1,337,641
Shares in trust
Series A non-cumulative convertible preferred stock, shares in trust	400,000	400,000