Stock-Based Compensation (Tables)

3 Months Ended

Apr. 30, 2012

Stock-Based Compensation [Abstract]

Schedule Of Restricted Stock Activity

	Shares
Outstanding at January 31, 2012...............................................................................................................................................................	568,498
Granted............................................................................................................................................................................................................	255,595
Vested..............................................................................................................................................................................................................	(167,364)
Canceled..........................................................................................................................................................................................................	(12,067)
Outstanding at April 30, 2012.....................................................................................................................................................................	644,662

Schedule Of Stock Options Activity

	Shares
Outstanding at January 31, 2012............................................................................................................................................................	1,651,400
Granted........................................................................................................................................................................................................	6,236
Exercised......................................................................................................................................................................................................	(1,000,774)
Canceled......................................................................................................................................................................................................	(13,221)
Outstanding at April 30, 2012..................................................................................................................................................................	643,641