Fair Value Measurements - Schedule of Reconciliation of Beginning and Ending Balances for Fair Value Measurements using Significant Unobservable Inputs (Details) - Available For Sale Investments - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 800	$ 800
Purchases	0	0
Ending Balance	$ 800	$ 800