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DEBT AND LINES OF CREDIT - Austrian Loans (Details)	Jan. 02, 2016 loan
Austrian loans due through March 2019 \| Loans
Long-Term Debt
Number of loans	4

X

- Definition

Represents the number of loans outstanding.

+ References

No definition available.

+ Details

Name:	newp_LineOfCreditFacilityLoansOutstandingNumber
Namespace Prefix:	newp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=newp_AustrianLoansDueThroughMarch2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LoansPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: