Product Warranties - Activity in Accrued Warranty Costs Liability (Details) - Warranty Reserves [Member] - USD ($) $ in Thousands	9 Months Ended
Nov. 30, 2018	Nov. 30, 2017
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 5,734	$ 6,518
Charged to costs and expenses	856	1,245
Deductions	(5,117)	(1,618)
Balance at end of period	$ 1,473	$ 6,145

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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)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Amount of decrease in valuation and qualifying accounts and reserves.

+ References

+ Details

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