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Sale of Asset Held for Sale - Additional Information (Detail) - USD ($)		3 Months Ended	9 Months Ended
	Oct. 29, 2015	Oct. 31, 2015	Oct. 31, 2015
Long Lived Assets Held-for-sale [Line Items]
Net Proceeds Received for Sale of Asset Held for Sale			$ 1,698,000
Net loss on sale		$ 3,000	$ 3,000
Grass Facility [Member]
Long Lived Assets Held-for-sale [Line Items]
Net Proceeds Received for Sale of Asset Held for Sale	$ 1,800,000

X

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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X

- Definition

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.

+ References

No definition available.

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X

- Definition

The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

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X

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