Condensed Consolidating Financial Information - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows (used in) provided by operating activities:
Net (loss) income	$ (7,844)	$ (50,177)
Net income attributable to noncontrolling interests	0	224
Net (loss) income attributable to Party City Holdings Inc.	(7,844)	(50,401)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	60,995	70,960
Amortization of deferred financing costs and original issuance discount	10,926	16,558
Provision for doubtful accounts	1,192	574
Deferred income tax benefit	(6,181)	(13,749)
Deferred rent	11,676	11,706
Undistributed loss in unconsolidated joint venture	846	311
Loss (gain) on disposal of equipment	2,305	329
Equity based income from subsidiaries	0	0
Equity based compensation	1,187	1,741
Changes in operating assets and liabilities, net of effects of acquired businesses:
Increase in accounts receivable	(47,490)	(35,488)
Increase in inventories	(171,195)	(82,379)
(Increase) decrease in prepaid expenses and other current assets	(2,035)	(12,853)
(Decrease) increase in accounts payable, accrued expenses and income taxes payable	64,544	29,287
Net cash (used in) provided by operating activities	(81,074)	(63,404)
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	(2,152)	(48,644)
Capital expenditures	(52,944)	(42,143)
Proceeds from disposal of property and equipment	951	215
Net cash used in investing activities	(54,145)	(90,572)
Cash flows provided by (used in) financing activities:
Repayments of loans, notes payable and long-term obligations	(1,139,953)	(1,149,145)
Proceeds from loans, notes payable and long-term obligations	1,310,166	1,312,603
Capital contributions	0	750
Exercise of stock options of Party City Holdco Inc.	1,081	0
Distribution to Parent	(31,816)	0
Debt issuance costs	(149)	(1,462)
Net cash provided by (used in) financing activities	139,329	162,746
Effect of exchange rate changes on cash and cash equivalents	(565)	28
Net (decrease) increase in cash and cash equivalents	3,545	8,798
Cash and cash equivalents at beginning of period	25,487	20,899
Cash and cash equivalents at end of period	29,032	29,697
Eliminations [Member]
Cash flows (used in) provided by operating activities:
Net (loss) income		(6,115)
Net income attributable to noncontrolling interests		(224)
Net (loss) income attributable to Party City Holdings Inc.	(43,524)	(5,891)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	0	0
Amortization of deferred financing costs and original issuance discount	0	0
Provision for doubtful accounts	0	0
Deferred income tax benefit	0	0
Deferred rent	0	0
Undistributed loss in unconsolidated joint venture	0	0
Loss (gain) on disposal of equipment	0	0
Equity based income from subsidiaries	43,524	6,115
Equity based compensation	0	0
Changes in operating assets and liabilities, net of effects of acquired businesses:
Increase in accounts receivable	0	0
Increase in inventories	0	0
(Increase) decrease in prepaid expenses and other current assets	0	0
(Decrease) increase in accounts payable, accrued expenses and income taxes payable	0	(224)
Net cash (used in) provided by operating activities	0	0
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	0	0
Capital expenditures	0	0
Proceeds from disposal of property and equipment	0	0
Net cash used in investing activities	0	0
Cash flows provided by (used in) financing activities:
Repayments of loans, notes payable and long-term obligations	0	0
Proceeds from loans, notes payable and long-term obligations	0	0
Capital contributions		0
Exercise of stock options of Party City Holdco Inc.	0
Distribution to Parent	0
Debt issuance costs	0	0
Net cash provided by (used in) financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
PCHI [Member]
Cash flows (used in) provided by operating activities:
Net (loss) income		(50,177)
Net income attributable to noncontrolling interests		224
Net (loss) income attributable to Party City Holdings Inc.	(7,844)	(50,401)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	0	0
Amortization of deferred financing costs and original issuance discount	8,381	12,001
Provision for doubtful accounts	0	0
Deferred income tax benefit	0	0
Deferred rent	0	0
Undistributed loss in unconsolidated joint venture	0	0
Loss (gain) on disposal of equipment	0	0
Equity based income from subsidiaries	(43,524)	(6,115)
Equity based compensation	0	0
Changes in operating assets and liabilities, net of effects of acquired businesses:
Increase in accounts receivable	0	0
Increase in inventories	0	0
(Increase) decrease in prepaid expenses and other current assets	0	0
(Decrease) increase in accounts payable, accrued expenses and income taxes payable	(101,244)	(96,275)
Net cash (used in) provided by operating activities	(144,231)	(140,790)
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	0	(37,930)
Capital expenditures	0	0
Proceeds from disposal of property and equipment	0	0
Net cash used in investing activities	0	(37,930)
Cash flows provided by (used in) financing activities:
Repayments of loans, notes payable and long-term obligations	(740,041)	(734,171)
Proceeds from loans, notes payable and long-term obligations	915,156	913,603
Capital contributions		750
Exercise of stock options of Party City Holdco Inc.	1,081
Distribution to Parent	(31,816)
Debt issuance costs	(149)	(1,462)
Net cash provided by (used in) financing activities	144,231	178,720
Effect of exchange rate changes on cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Combined Guarantors [Member]
Cash flows (used in) provided by operating activities:
Net (loss) income		3,397
Net income attributable to noncontrolling interests		0
Net (loss) income attributable to Party City Holdings Inc.	39,072	3,397
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	57,132	67,474
Amortization of deferred financing costs and original issuance discount	2,545	4,557
Provision for doubtful accounts	699	158
Deferred income tax benefit	(5,240)	(13,613)
Deferred rent	10,551	10,807
Undistributed loss in unconsolidated joint venture	846	311
Loss (gain) on disposal of equipment	2,315	160
Equity based income from subsidiaries	0	0
Equity based compensation	1,187	1,741
Changes in operating assets and liabilities, net of effects of acquired businesses:
Increase in accounts receivable	(21,523)	(23,370)
Increase in inventories	(155,963)	(72,954)
(Increase) decrease in prepaid expenses and other current assets	(7,343)	(11,089)
(Decrease) increase in accounts payable, accrued expenses and income taxes payable	125,933	82,222
Net cash (used in) provided by operating activities	50,211	49,801
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	(2,152)	0
Capital expenditures	(46,454)	(36,814)
Proceeds from disposal of property and equipment	432	192
Net cash used in investing activities	(48,174)	(36,622)
Cash flows provided by (used in) financing activities:
Repayments of loans, notes payable and long-term obligations	(399,410)	(406,561)
Proceeds from loans, notes payable and long-term obligations	395,010	399,000
Capital contributions		0
Exercise of stock options of Party City Holdco Inc.	0
Distribution to Parent	0
Debt issuance costs	0	0
Net cash provided by (used in) financing activities	(4,400)	(7,561)
Effect of exchange rate changes on cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	(2,363)	5,618
Cash and cash equivalents at beginning of period	16,182	11,368
Cash and cash equivalents at end of period	13,819	16,986
Combined Non-Guarantors [Member]
Cash flows (used in) provided by operating activities:
Net (loss) income		2,718
Net income attributable to noncontrolling interests		224
Net (loss) income attributable to Party City Holdings Inc.	4,452	2,494
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization expense	3,863	3,486
Amortization of deferred financing costs and original issuance discount	0	0
Provision for doubtful accounts	493	416
Deferred income tax benefit	(941)	(136)
Deferred rent	1,125	899
Undistributed loss in unconsolidated joint venture	0	0
Loss (gain) on disposal of equipment	(10)	169
Equity based income from subsidiaries	0	0
Equity based compensation	0	0
Changes in operating assets and liabilities, net of effects of acquired businesses:
Increase in accounts receivable	(25,967)	(12,118)
Increase in inventories	(15,232)	(9,425)
(Increase) decrease in prepaid expenses and other current assets	5,308	(1,764)
(Decrease) increase in accounts payable, accrued expenses and income taxes payable	39,855	43,564
Net cash (used in) provided by operating activities	12,946	27,585
Cash flows used in investing activities:
Cash paid in connection with acquisitions, net of cash acquired	0	(10,714)
Capital expenditures	(6,490)	(5,329)
Proceeds from disposal of property and equipment	519	23
Net cash used in investing activities	(5,971)	(16,020)
Cash flows provided by (used in) financing activities:
Repayments of loans, notes payable and long-term obligations	(502)	(8,413)
Proceeds from loans, notes payable and long-term obligations	0	0
Capital contributions		0
Exercise of stock options of Party City Holdco Inc.	0
Distribution to Parent	0
Debt issuance costs	0	0
Net cash provided by (used in) financing activities	(502)	(8,413)
Effect of exchange rate changes on cash and cash equivalents	(565)	28
Net (decrease) increase in cash and cash equivalents	5,908	3,180
Cash and cash equivalents at beginning of period	9,305	9,531
Cash and cash equivalents at end of period	$ 15,213	$ 12,711