Consolidated Statement of Shareholders Equity (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Nov. 30, 2019	Aug. 31, 2019	Jun. 01, 2019	Dec. 01, 2018	Sep. 01, 2018	Jun. 02, 2018	Nov. 30, 2019	Dec. 01, 2018
Statement of Stockholders' Equity [Abstract]
Tax expense (benefit) on marketable securities	$ (11)	$ 2	$ 47	$ (16)	$ (11)	$ 2	$ 38	$ (25)
Tax expense (benefit) on foreign currency hedge	$ (119)	$ (25)	$ (2)	$ (10)	$ 17	$ 92	$ (146)	$ 99

Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration