It represent the adjustment libor base rate.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Installment Payment as a Percentage of Principal

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Debt Instrument, Repricing Premium

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Term loan principal amount as on date.

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6517033

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

+ References

+ Details

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Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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

- Details

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- Details

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LONG-TERM DEBT AND NOTE PAYABLE - Credit Agreement, Amended ABL Facility, Debt Covenants, Deferred Finance Costs, and Insurance Note Payable (Details) - USD ($)		3 Months Ended
	May 02, 2017	Jan. 28, 2018	Jan. 29, 2017	Oct. 29, 2017	May 01, 2017	May 02, 2012
Line of Credit Facility [Line Items]
Long term debt, carrying amount		$ 397,625,000		$ 387,290,000
Note payable		0		440,000
Credit Agreement, Due June 2019
Line of Credit Facility [Line Items]
Long term debt, carrying amount					$ 144,100,000
Credit Agreement, Due June 2022
Line of Credit Facility [Line Items]
Long term debt, carrying amount		$ 144,147,000		144,147,000
Adjusted LIBOR floor rate (not less than)	1.00%
Debt instrument, interest rate, stated percentage		4.62%
Debt instrument, repricing premium		1.00%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving loans outstanding		$ 10,000,000		0
ABL Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity, line of credit (up to)		10,000,000		10,000,000
Remaining borrowing capacity on line of credit		129,700,000		140,000,000
Minimum borrowing capacity for line of credit		$ 19,500,000		$ 21,000,000
ABL Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity, line of credit (up to)						$ 150,000,000
Unused commitment fee		0.50%
Credit Agreement
Line of Credit Facility [Line Items]
Term loan principal amount		$ 250,000,000
Installment payment as a percentage of principal		1.00%
Voluntary prepayment on debt			$ 10,000,000
Base Rate \| Credit Agreement, Due June 2022
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	2.00%
London Interbank Offered Rate (LIBOR) \| Credit Agreement, Due June 2022
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Minimum \| ABL Facility
Line of Credit Facility [Line Items]
Fixed charge coverage ratio		1
Minimum \| Base Rate \| ABL Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		0.75%
Minimum \| London Interbank Offered Rate (LIBOR) \| ABL Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.75%
Maximum \| Base Rate \| ABL Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.25%
Maximum \| London Interbank Offered Rate (LIBOR) \| ABL Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		2.25%
Letter of Credit \| ABL Facility
Line of Credit Facility [Line Items]
Remaining borrowing capacity on line of credit						$ 30,000,000