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Financial Instruments and Risk Management - Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Risks Inherent in Cash and Cash Equivalents
Cash, interest and non-interest-bearing accounts - unrestricted	$ 21,819	$ 10,956
Money market funds	2,648	915
Cash and cash equivalents of continuing operations, ending balance	$ 24,467	$ 11,871
Cash | Minimum
Risks Inherent in Cash and Cash Equivalents
Investment interest rate	0.00%	0.00%
Cash | Maximum
Risks Inherent in Cash and Cash Equivalents
Investment interest rate	0.30%	0.30%
Money Market Funds | Minimum
Risks Inherent in Cash and Cash Equivalents
Investment interest rate	0.15%	0.00%
Money Market Funds | Maximum
Risks Inherent in Cash and Cash Equivalents
Investment interest rate	5.39%	1.25%

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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-Topic 210
-SubTopic 10
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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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-Name Accounting Standards Codification
-Topic 230
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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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