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Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jul. 29, 2017	Jul. 29, 2017
Fair Value Disclosures [Abstract]
Long-lived assets, impairment charges	$ 916,000	$ 1,600,000
Remaining unamortized basis	$ 286,000	$ 1,300,000

X

- Definition

The unamortized basis of long-lived asset that were written down during the period.

+ References

No definition available.

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- References

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X

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 360
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 220
-Section 45
-Paragraph 11
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-URI http://asc.fasb.org/extlink&oid=114873921&loc=SL114875236-224282

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-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228

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