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Investment Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($)
$ in Thousands
Aug. 31, 2020
Feb. 29, 2020
Gain (Loss) on Securities [Line Items]    
Marketable Equity Securities $ 1,838 $ 2,282
Investments, Fair Value Disclosure 1,838 2,282
Mutual Funds [Member]    
Gain (Loss) on Securities [Line Items]    
Marketable Equity Securities $ 1,838 $ 2,282