SCHEDULE II - Valuation and qualifying accounts (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Allowances for doubtful accounts
Valuation and Qualifying Accounts
Beginning Balance	$ 3,266	$ 1,712	$ 1,830
Charged to cost and expenses	1,066	2,277	298
Deductions	1,420	723	416
Ending Balance	2,912	3,266	1,712
Allowances for back-to-stock returns
Valuation and Qualifying Accounts
Beginning Balance	2,293	4,165	4,033
Net charge (credit) to sales revenue	104	(1,872)	132
Ending Balance	$ 2,397	$ 2,293	$ 4,165

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

No definition available.

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

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- Definition

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+ Details

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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