Debt Instrument Number Of Interest Rate Options Available

No definition available.

Name:	prty_DebtInstrumentNumberOfInterestRateOptionsAvailable
Namespace Prefix:	prty_
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Balance Type:	na
Period Type:	instant

- Definition

Decreased Libor Floor Rate

+ References

No definition available.

+ Details

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

- Definition

Interest Rate Margin On Base Rate Loans

+ References

No definition available.

+ Details

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

- Definition

Legal fees and banker fees incurred during term loan amendment.

+ References

No definition available.

+ Details

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

- Definition

Minimum alternate base rate.

+ References

No definition available.

+ Details

Name:	prty_MinimumAlternateBaseRate
Namespace Prefix:	prty_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voluntary prepayments.

+ References

No definition available.

+ Details

Name:	prty_PercentageOfVoluntaryPrepayments
Namespace Prefix:	prty_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateTerms
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Data Type:	xbrli:stringItemType
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
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: 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(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- 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

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
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Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=prty_AlternateBaseInterestRateLoansMember
Namespace Prefix:
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
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- Details

Name:	us-gaap_VariableRateAxis=prty_LiborFloorRateMember
Namespace Prefix:
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- Details

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- Details

Name:	us-gaap_VariableRateAxis=prty_FederalFundsRateMember
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- Details

Name:	us-gaap_VariableRateAxis=prty_LiborBasedLoansMember
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Subsequent Event - Additional Information (Detail)	Oct. 31, 2016 USD ($) OptionPlan	Sep. 30, 2016
Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| Alternate Base Interest Rate Loans [Member]
Subsequent Event [Line Items]
Basis spread on variable rate		2.25%
Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate		3.25%
Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| LIBOR Floor Rate [Member]
Subsequent Event [Line Items]
Basis spread on variable rate		1.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Banker fees incurred during term loan amendment	$ 626,000
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member]
Subsequent Event [Line Items]
Credit facility borrowing maximum capacity	640,000,000
Credit facility current borrowing capacity	540,000,000
Credit facility borrowing capacity	$ 100,000,000
Minimum adjustment rate of LIBOR	1.75%
Decreased LIBOR floor rate	0.75%
Percentage of voluntary prepayments	1.00%
Number of pricing options \| OptionPlan	2
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| Alternate Base Interest Rate Loans [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	2.00%
Interest rate description	(i) an ABR for any day, a rate per annum equal to the greater of (a) the prime rate in effect on such day, (b) the federal funds effective rate in effect on such day plus 0.5%, (c) the adjusted LIBOR rate plus 1% and (d) 1.75%
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| LIBOR [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	3.00%
Basis spread on variable rate	1.00%
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| LIBOR Floor Rate [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	0.75%
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| Federal Funds Rate [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	0.50%
Subsequent Event [Member] \| Term Loan Credit Agreement [Member] \| Secured Debt [Member] \| Libor Based Loans [Member]
Subsequent Event [Line Items]
Interest rate description	(ii) the LIBOR rate, with a LIBOR floor of 0.75%, in each case plus an applicable margin.