OPERATING SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
May 03, 2015	May 04, 2014	May 03, 2015	May 04, 2014	Nov. 02, 2014
Segment Reporting Information [Line Items]
Total net sales	$ 360,147us-gaap_SalesRevenueNet	$ 305,800us-gaap_SalesRevenueNet	$ 683,073us-gaap_SalesRevenueNet	$ 616,466us-gaap_SalesRevenueNet
Total external net sales	360,147us-gaap_Revenues	305,800us-gaap_Revenues	683,073us-gaap_Revenues	616,466us-gaap_Revenues
Total operating income (loss)	(3,617)us-gaap_OperatingIncomeLoss	(5,513)us-gaap_OperatingIncomeLoss	954us-gaap_OperatingIncomeLoss	(8,681)us-gaap_OperatingIncomeLoss
Unallocated other expense	(7,958)ncs_UnallocatedOtherExpenses	(2,449)ncs_UnallocatedOtherExpenses	(13,339)ncs_UnallocatedOtherExpenses	(6,045)ncs_UnallocatedOtherExpenses
Loss before income taxes	(11,575)	(7,962)	(12,385)	(14,726)
Total assets	1,013,724us-gaap_Assets		1,013,724us-gaap_Assets		758,683us-gaap_Assets
Metal Coil Coating [Member]
Segment Reporting Information [Line Items]
Total net sales	49,998	54,307	105,608	108,574
Total external net sales	22,804	25,508	47,208	50,098
Total operating income (loss)	2,397	3,893	6,375	10,388
Total assets	81,405		81,405		84,519
Metal Components [Member]
Segment Reporting Information [Line Items]
Total net sales	221,118	155,085	393,907	313,278
Total external net sales	198,681	135,734	352,709	275,080
Total operating income (loss)	6,941	4,559	15,277	8,670
Total assets	410,151		410,151		365,874
Engineered Building Systems [Member]
Segment Reporting Information [Line Items]
Total net sales	143,245	149,411	293,045	301,648
Total external net sales	138,662	144,558	283,156	291,288
Total operating income (loss)	2,855	36	11,574	1,676
Total assets	211,871		211,871		209,281
Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total net sales	(54,214)	(53,003)	(109,487)	(107,034)
Corporate [Member]
Segment Reporting Information [Line Items]
Total operating income (loss)	(15,810)	(14,001)	(32,272)	(29,415)
Total assets	$ 310,297		$ 310,297		$ 99,009

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 235

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The net result for the period of deducting operating expenses from operating revenues.

+ References

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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