Income Taxes - Unrecognized tax benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 29, 2020	Feb. 28, 2019
Unrecognized Tax Benefits
Total unrecognized tax benefits, beginning balance	$ 3,205	$ 4,428
Resolution of tax dispute	0	0
Changes in tax positions taken during a prior period	(2,819)
Changes in tax positions taken during a prior period		15
Lapse in statute of limitations	0	(1,057)
Impact of foreign currency re-measurement	0	(161)
Settlements	(273)	(20)
Total unrecognized tax benefits, ending balance	113	3,205
Less current unrecognized tax benefits	0	(316)
Noncurrent unrecognized tax benefits	$ 113	$ 2,889

Amount of decrease in unrecognized tax benefits resulting from resolution of tax dispute.

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Amount recognized for uncertainty in income taxes classified as current.

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from foreign currency translation.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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