Share Based Payments Summary of Nonvested Options and Changes (Details)	6 Months Ended
	Aug. 31, 2015 $ / shares shares
Options
Nonvested, beginning of period | shares	3,167,083
Granted | shares	1,603,719
Vested | shares	1,797,149
Forfeited | shares	35,000
Nonvested, end of period | shares	2,938,653
Weighted Average Grant Date Fair Value
Nonvested, beginning of period	$ 1.08
Granted	1.01
Vested	0.72
Forfeited	1.50
Nonvested, end of period	$ 1.26