Schedule II - Valuation and Qualifying Accounts - Valuation and qualifying accounts (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Allowance for credit losses
Valuation and Qualifying Accounts
Beginning Balance	$ 1,461	$ 2,032	$ 2,912
Additions	2,093	529	1,097
Deductions	2,556	1,100	1,977
Ending Balance	998	1,461	2,032
Deferred tax asset valuation allowance
Valuation and Qualifying Accounts
Beginning Balance	14,073	17,086	17,747
Additions	948	0	0
Deductions	0	3,013	661
Ending Balance	$ 15,021	$ 14,073	$ 17,086

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- Definition

Amount of valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column B))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column E))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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- Definition

Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

+ References

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Amount of decrease in valuation and qualifying accounts and reserves.

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