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	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Basic net income (loss) per common share
Net income (loss) available to common shareholders from continuing operations	$ 23,352	$ 82,129	$ 13,119
Impact of equity awards (in shares)	842	279	189
Diluted net income (loss)
Net income (loss) available to common shareholders from continuing operations	$ 23,352	$ 82,129	$ 13,119
Basic shares
Basic weighted average common shares outstanding	12,606	12,347	12,040
Diluted shares
Diluted weighted average common shares outstanding (in shares)	13,448	12,626	12,229
Basic net income per share attributable to common shareholders:
Basic net income (loss) per common share (in dollars per share)	$ 1.85	$ 6.65	$ 1.09
Diluted net income per share attributable to common shareholders:
Diluted net income (loss) per common share (in dollars per share)	$ 1.74	$ 6.50	$ 1.07