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		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Basic net (loss) income per common share:
Net (loss) income available to common shareholders from continuing operations	$ 4,273	$ 893	$ 10,645	$ (2,474)
Impact of equity awards
Impact of conversion of preferred stock into common stock	0		(325)
Diluted net (loss) income per common share:
Net income available to common shareholders from continuing operations	$ 4,273	$ 893	$ 10,320	$ (2,474)
Basic shares:
Basic weighted average common shares outstanding (in shares)	40,477	38,976	40,343	38,871
Impact of equity awards (in shares)	3,469	2,732	3,040
Impact of conversion of preferred stock into common stock (in shares)	2,266	4,020	2,274
Diluted shares:
Diluted weighted average common shares outstanding (in shares)	46,212	45,728	45,657	38,871
Basic net income per common share:
Net income available to common shareholders from continuing operations, per basic shares (in dollars per share)	$ 0.11	$ 0.02	$ 0.26	$ (0.06)
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)	$ 0.09	$ 0.02	$ 0.23	$ (0.06)