Summary of Significant Accounting Policies Calculation of Basic and Diluted Net Income Per Share from Continuing Operations (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012
Basic net (loss) income per common share:
Net (loss) income available to common shareholders from continuing operations	$ 2,647	$ (695)	$ 6,372	$ (3,367)
Impact of equity awards
Impact of conversion of preferred stock into common stock	(76)		(325)
Diluted net (loss) income per common share:
Net income available to common shareholders from continuing operations	$ 2,571	$ (695)	$ 6,047	$ (3,367)
Basic shares:
Basic weighted average common shares outstanding (in shares)	41,451	38,859	41,313	38,819
Impact of equity awards (in shares)	3,217		2,770
Impact of conversion of preferred stock into common stock (in shares)	2,269		2,278
Diluted shares:
Diluted weighted average common shares outstanding (in shares)	46,937	38,859	46,361	38,819
Basic net income per common share:
Net income available to common shareholders from continuing operations, per basic shares (in dollars per share)	$ 0.06	$ (0.02)	$ 0.15	$ (0.09)
Impact of equity awards (in dollars per share)
Impact of conversion of preferred stock into common stock (in dollars per share)
Diluted net income per common share:
Net income available to common shareholders from continuing operations, per dilutive shares (in dollars per share)	$ 0.05	$ (0.02)	$ 0.13	$ (0.09)