Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

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Investments - Long-Term Investments (Details) - USD ($) $ in Thousands	6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Feb. 03, 2018
Investment Holdings [Line Items]
Long-term investments	$ 10,991		$ 15,515
Unrealized (loss) gain on available-for-sale investments	0	$ 0
Level 1 \| Fair Value, Measurements, Recurring \| U.S. corporate debt securities
Investment Holdings [Line Items]
Long-term investments	0		0
Level 1 \| Fair Value, Measurements, Recurring \| Non-U.S. corporate debt securities
Investment Holdings [Line Items]
Long-term investments	0		0
Level 1 \| Fair Value, Measurements, Recurring \| Municipal securities
Investment Holdings [Line Items]
Long-term investments	0		0
Level 1 \| Fair Value, Measurements, Recurring \| U.S. treasury securities
Investment Holdings [Line Items]
Long-term investments	0		3,099
Level 2 \| Fair Value, Measurements, Recurring \| U.S. corporate debt securities
Investment Holdings [Line Items]
Long-term investments	2,665		4,543
Level 2 \| Fair Value, Measurements, Recurring \| Non-U.S. corporate debt securities
Investment Holdings [Line Items]
Long-term investments	4,335		2,775
Level 2 \| Fair Value, Measurements, Recurring \| Municipal securities
Investment Holdings [Line Items]
Long-term investments	3,991		5,098
Level 2 \| Fair Value, Measurements, Recurring \| U.S. treasury securities
Investment Holdings [Line Items]
Long-term investments	$ 0		$ 0