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DEBT AND LINES OF CREDIT (Details 2) (Secured debt, Revolving line of credit, U.S. revolving line of credit expiring July 2018, USD $)
In Thousands, unless otherwise specified
Apr. 04, 2015
Jan. 03, 2015
Secured debt | Revolving line of credit | U.S. revolving line of credit expiring July 2018
    
Long-term debt    
Total long-term debt $ 78,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= newp_USRevolvingLineOfCreditExpiringJuly2018Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember		 $ 71,000us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= newp_USRevolvingLineOfCreditExpiringJuly2018Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember