Schedule I - Condensed Financial Information of Registrant - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Other assets (principally investment in and amounts due from wholly-owned subsidiaries)	$ 7,273	$ 12,323
Total assets	3,595,319	3,642,347
LIABILITIES, REDEEMABLE SECURITIES AND STOCKHOLDERS' EQUITY
Redeemable securities	3,351	3,351
Stockholders' equity:
Common stock (94,461,576 and 93,622,934 shares outstanding and 121,662,540 and 120,788,159 shares issued at December 31, 2019 and December 31, 2018, respectively)	1,211	1,208
Additional paid-in capital	928,573	922,476
Retained (deficit) earnings	(37,219)	495,777
Accumulated other comprehensive loss	(35,734)	(49,201)
Total stockholders' equity before common stock held in treasury	856,831	1,370,260
Less: Common stock held in treasury, at cost (27,200,964 shares and 27,165,225 shares at December 31, 2019 and December 31, 2018, respectively)	(327,086)	(326,930)
Total stockholders' equity	529,745	1,043,330
Total liabilities, redeemable securities and stockholders' equity	3,595,319	3,642,347
Party City Holdco Inc. [Member]
ASSETS
Other assets (principally investment in and amounts due from wholly-owned subsidiaries)	533,096	1,046,681
Total assets	533,096	1,046,681
LIABILITIES, REDEEMABLE SECURITIES AND STOCKHOLDERS' EQUITY
Redeemable securities	3,351	3,351
Stockholders' equity:
Common stock (94,461,576 and 93,622,934 shares outstanding and 121,662,540 and 120,788,159 shares issued at December 31, 2019 and December 31, 2018, respectively)	1,211	1,208
Additional paid-in capital	928,573	922,476
Retained (deficit) earnings	(37,219)	495,777
Accumulated other comprehensive loss	(35,734)	(49,201)
Total stockholders' equity before common stock held in treasury	856,831	1,370,260
Less: Common stock held in treasury, at cost (27,200,964 shares and 27,165,225 shares at December 31, 2019 and December 31, 2018, respectively)	(327,086)	(326,930)
Total stockholders' equity	529,745	1,043,330
Total liabilities, redeemable securities and stockholders' equity	$ 533,096	$ 1,046,681

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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