Investment Securities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 30, 2020	Nov. 30, 2020	Nov. 30, 2019	Feb. 28, 2018
RxNetworks [Member]
Gain (Loss) on Securities [Line Items]
Cost-method investments, realized gain (loss)	$ 42	$ 42	$ 775	$ 1,416