Income Taxes - Unrecognized tax benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2019	Feb. 28, 2018
Unrecognized Tax Benefits
Total unrecognized tax benefits, beginning balance	$ 4,428	$ 6,611
Resolution of tax dispute	0	(1,486)
Changes in tax positions taken during a prior period	15	88
Lapse in statute of limitations	(1,057)	(890)
Impact of foreign currency re-measurement		218
Impact of foreign currency re-measurement	(161)
Settlements	(20)	(113)
Total unrecognized tax benefits, ending balance	3,205	4,428
Less current unrecognized tax benefits	(316)	(1,079)
Noncurrent unrecognized tax benefits	$ 2,889	$ 3,349

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 foreign currency translation.

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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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