Represents the closing price per share during the period.

No definition available.

Name:	ncs_ClosingPricePerShare
Namespace Prefix:	ncs_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

It represents the element common shares effective date of the incentive plan.

+ References

No definition available.

+ Details

Name:	ncs_CommonSharesEffectiveDateOfIncentivePlan
Namespace Prefix:	ncs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the forfeiture rate for the period.

+ References

No definition available.

+ Details

Name:	ncs_ForfeitureRate
Namespace Prefix:	ncs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of value consisting at the time of stock granted during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-Based Compensation Arrangement By Share Based Payment Award, Holding Period Subsequent to Vesting

+ References

No definition available.

+ Details

Name:	ncs_ShareBasedCompensationArrangementByShareBasedPaymentAwardHoldingPeriodSubsequenttoVesting
Namespace Prefix:	ncs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value for long-term incentive compensation awarded for share-based compensation arrangements to employees and directors or earned by them based on the terms of one or more relevant arrangements.

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

It represents the fair value of Performance Share Awards granted during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

It represents the description of share based compensation arrangement during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:stringItemType
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- Definition

It represents the fair value of Performance Share Awards granted during the period.

+ References

No definition available.

+ Details

Name:	ncs_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantedinPeriodFairValue
Namespace Prefix:	ncs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Payout Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Portion Paid in Cash

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period, After Death

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period, After Disability or Retirement

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period, After Termination of Employment or Service

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Percentage of Targeted Number of Shares

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Payment Type Percentage, Stock

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based payment Award, Performance Period

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Share-based compensation arrangement by share-based payment award, performance metric, cumulative free cash flow

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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Period Type:	instant

- Definition

Share-based compensation arrangement by share-based payment award, performance metric, percent

+ References

No definition available.

+ Details

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- Definition

Share-based compensation arrangement by share-based payment award, performance metric, total shareholder return

+ References

No definition available.

+ Details

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Namespace Prefix:	ncs_
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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period Type:	duration

- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Data Type:	xbrli:monetaryItemType
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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back 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
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Data Type:	xbrli:sharesItemType
Balance Type:	na
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

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Balance Type:	na
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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Net number of share options (or share units) granted during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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

- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of employees affected by the modification of an equity-based compensation plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)(ii)
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Period Type:	duration

- Definition

Percentage of vesting of share-based compensation awards.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of options vested.

+ References

No definition available.

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Data Type:	xbrli:sharesItemType
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- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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- Definition

Number of share options (or share units) exercised during the current period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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Period Type:	duration

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Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
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SHARE-BASED COMPENSATION (Details Textual) - USD ($) $ / shares in Units, $ in Thousands						1 Months Ended		12 Months Ended
	Dec. 15, 2017	Dec. 15, 2016	Jul. 15, 2015	Aug. 01, 2012	Aug. 01, 2012	Jul. 31, 2015	Dec. 31, 2013	Nov. 01, 2015	Nov. 02, 2014	Nov. 03, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares effective date of incentive plan								10 years
Award termination period after termination of employment or service								30 days
Award termination period after death								1 year
Award termination period after disability or retirement								5 years
Award service period								3 years
Pre-tax share-based compensation cost								$ 9,400	$ 10,200	$ 14,900
Share-based compensation included in engineering, selling, general, and administrative expense								9,379	10,168	14,900
Tax benefit recognized in results for operations for share-based compensation arrangements								3,700	3,900	5,700
Cash received from option exercises								$ 400		$ 700
Stock options exercised (in shares)								40,000		76,000
Tax benefit from option exercises									$ 200
Stock options granted (in shares)								10,543	5,058	2,101
Average grant-date fair value of options (in dollars per share)								$ 7.91	$ 9.09	$ 7.22
Performance stock unit awards, fair value									$ 2,200
Performance stock unit awards (in shares)								10,000	5,000	2,000
Performance stock unit awards, actual payout, percent			52.675%
Performance stock unit awards, actual payout, units			541,240
Performance stock unit awards, actual payout, shares issued, net of tax						281,842
Performance stock unit awards, actual payout, shares withheld for taxes						114,541
Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Deferred								144,857
Share-base compensation arrangement description							In December 2013, we granted long-term incentive Performance Share Awards with performance conditions that will be paid 50% in cash and 50% in stock.	the TSR achieved during the performance period, with no shares being issued if the 20-day average common share trading price is at or below $10 per share at the end of the performance period; the target number of shares (1,027,500) being issued if the 20-day average share price is $20 per share at the end of the performance period; the maximum number of shares (3,082,500) being issued if the 20-day average share price is $30 per share at the end of the performance period. (5) Unless there is a Qualifying Termination (as defined in the Performance Share Award Agreement), the PSUs of an executive will be forfeited upon an executive’s termination of employment during the performance period.
Forfeiture rate								0.00%
Holding period subsequent to vesting								18 months
Percentage of performance share awards paid in cash								50.00%
Percentage of performance share awards paid in stock								50.00%
Number of employees impacted by Modification								82
Number of shares available for grant								3,082,500
Share-based Compensation Arrangement by Share-based payment Award, Performance Period								20 days
2014 Executive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of PSUs granted								$ 1,500
Total cash award granted								1,700
Selling, General and Administrative Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation included in engineering, selling, general, and administrative expense								$ 8,300	$ 8,900	$ 14,200
Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate								0.00%	0.00%	0.00%
Non Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate								7.50%	7.50%	10.00%
Employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award termination period for incentive stock options								1 year
Award vesting period								4 years
PSUs and Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period							3 years	3 years
Award service period								3 years
Performance stock unit awards, fair value					$ 12,000
Performance stock unit awards (in shares)				1,027,500	1,027,500
PSUs and Performance Share Awards \| 2014 Executive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation percent of awards by value, of the long-term incentive awards plan								60.00%
Performance metric, cumulative free cash flow, percent								40.00%
Performance metric, cumulative earnings per share, percent								40.00%
Performance metric, total shareholder return, percent								20.00%
Maximum percentage of targeted number of shares								200.00%
Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, issued								4,254,000	2,538,000
Performance Based Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								3 years
Unrecognized compensation cost related to stock option share-based compensation arrangements								$ 3,600	$ 4,200
Weighted-average remaining period of recognition of unrecognized compensation cost								1 year 9 months 12 days	1 year 2 months 12 days
Percentage of award that is time-based and performance-based								50.00%
Time-based restricted stock awards, fair value								270,000	125,000	0
Number of shares available for grant								0
Performance Based Award \| 2014 Executive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of PSUs granted									$ 3,600
Time Based Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								4 years
Percentage of award that is time-based and performance-based								50.00%
Time-based restricted stock awards, fair value								410,000	192,000	447,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to stock option share-based compensation arrangements								$ 7,300	$ 7,700
Weighted-average remaining period of recognition of unrecognized compensation cost								2 years 1 month 6 days	2 years 6 months 18 days
Fair value of PSUs granted								$ 6,800	$ 3,500	$ 6,400
Time-based restricted stock awards, fair value								409,782	192,005	446,566
Restricted Stock \| 2014 Executive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation percent of awards by value, of the long-term incentive awards plan								40.00%
Market Based Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period								3 years
Time-based restricted stock awards, fair value								45,000	0	0
December 15, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price per share (in dollars per share)								$ 10
December 15, 2016 \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of award that is time-based and performance-based								66.67%
December 15, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price per share (in dollars per share)								$ 20
December 15, 2017 \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of award that is time-based and performance-based								33.33%
End of Performance Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price per share (in dollars per share)								$ 30
Employee stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to stock option share-based compensation arrangements								$ 100	$ 300
Weighted-average remaining period of recognition of unrecognized compensation cost								1 year 10 months 24 days	1 year 4 months 24 days
Scenario, Forecast \| PSUs and Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of award that is time-based and performance-based	50.00%	50.00%