Summary of Significant Accounting Policies Calculation of Basic and Diluted Net Income Per Share from Continuing Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	May 31, 2018	May 31, 2017
Basic net income (loss) per common share:
Net income (loss) available to common shareholders	$ 23,485	$ (267)
Basic shares:
Basic weighted average common shares outstanding (in shares)	12,483	12,257
Impact of equity awards (in shares)	928
Diluted shares:
Diluted weighted average common shares outstanding (in shares)	13,411	12,257
Basic net income (loss) per common share:
Net income available to common shareholders from continuing operations, per basic shares (in dollars per share)	$ 1.88	$ (0.02)
Diluted net income (loss) per common share:
Net income available to common shareholders from continuing operations, per dilutive shares (in dollars per share)	$ 1.75	$ (0.02)