Represents the amount of borrowings used for repayment of debt.

No definition available.

Name:	newp_AmountOfBorrowingsUsedForRepaymentOfDebt
Namespace Prefix:	newp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	newp_DebtInstrumentTerm
Namespace Prefix:	newp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum amount of the option to increase the aggregate principal amount of loans.

+ References

No definition available.

+ Details

Name:	newp_LineOfCreditFacilityMaximumAmountOfOptionToIncreaseBorrowings
Namespace Prefix:	newp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the original loan amount of a term loan.

+ References

No definition available.

+ Details

Name:	newp_TermLoanOriginalLoanAmount
Namespace Prefix:	newp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

SUBSEQUENT EVENT (Details) (USD $)			0 Months Ended							0 Months Ended
SUBSEQUENT EVENT (Details) (USD $)	Jun. 29, 2013	Jun. 29, 2013 Revolving line of credit	Jul. 18, 2013 Subsequent event	Jul. 18, 2013 Subsequent event Revolving line of credit	Jul. 18, 2013 Subsequent event Revolving line of credit Maximum	Jul. 18, 2013 Subsequent event Revolving line of credit Minimum	Jul. 18, 2013 Subsequent event Revolving line of credit Base Rate	Jul. 18, 2013 Subsequent event Revolving line of credit Base Rate Maximum	Jul. 18, 2013 Subsequent event Revolving line of credit Base Rate Minimum	Jul. 18, 2013 Subsequent event Revolving line of credit Eurodollar Rate	Jul. 18, 2013 Subsequent event Revolving line of credit Eurodollar Rate Maximum	Jul. 18, 2013 Subsequent event Revolving line of credit Eurodollar Rate Minimum
Subsequent event
Maximum borrowing capacity		$ 65,000,000		$ 275,000,000
Term loan, original loan amount	185,000,000
Term of credit facility				5 years
Amount of Borrowings used for Repayment of Debt			120,000,000
Repayment of entire outstanding principal amount			152,600,000
Amount of optional increase in aggregate principal amount of borrowings				$ 50,000,000
Reference rate description							Base Rate			Eurodollar Rate
Margin on reference rate (as a percent)							1.00%	1.25%	0.50%	2.00%	2.25%	1.50%
Commitment fee (as a percent)					0.40%	0.25%