Insurance Settlement, Contingent Replacement Cost Receivable, Maximum

No definition available.

Name:	ncs_InsuranceSettlementContingentReplacementCostReceivableMaximum
Namespace Prefix:	ncs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of insurance proceeds for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64828382&loc=d3e15138-107781

+ Details

Name:	us-gaap_UnusualOrInfrequentItemInsuranceProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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.

+ Details

Name:	us-gaap_UnusualOrInfrequentItemLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of (gain) loss for an event or transaction that is unusual in nature or occurs infrequently, or both.

+ References

+ Details

Name:	us-gaap_UnusualOrInfrequentItemNetGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ncs_MetalComponentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_UnusualOrInfrequentItemAxis=us-gaap_NaturalDisastersAndOtherCasualtyEventsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				6 Months Ended	9 Months Ended
	May 31, 2017	Jul. 30, 2017	Apr. 30, 2017	Oct. 30, 2016	Jul. 31, 2016	Apr. 30, 2017	Jul. 30, 2017	Jul. 31, 2016
Unusual or Infrequent Item, or Both [Line Items]
Gain on insurance recovery		$ (148)			$ 0		$ (9,749)	$ 0
Metal Components \| Facility fire
Unusual or Infrequent Item, or Both [Line Items]
Insurance proceeds	$ 8,000		$ 18,000	$ 10,000
Gain on insurance recovery			$ 9,200
Maximum potential insurance reimbursement for the difference between actual cash value and replacement cost		$ 4,700					$ 4,700
Cost of sales \| Metal Components \| Facility fire
Unusual or Infrequent Item, or Both [Line Items]
Insurance proceeds						$ 8,800