Fair Value Measurements - Summary of Carrying Amount and Fair Value (Detail) $ in Thousands	Jun. 30, 2022 USD ($)
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	$ 1,364,860
8.75% Senior Secured First Lien Notes - due 2026 [Member] | Senior Secured First Lien Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	750,000
Debt Instrument Fair Value	504,375
6.125% Senior Notes - due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	22,924
Debt Instrument Fair Value	19,170
6.625% Senior Notes - due 2026 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	92,254
Debt Instrument Fair Value	52,585
First Lien Party City Notes - due 2025 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	193,426
Debt Instrument Fair Value	134,189
First Lien Anagram Notes - due 2025 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	149,385
Debt Instrument Fair Value	155,921
Second Lien Anagram Notes - due 2026 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Amount	144,576
Debt Instrument Fair Value	$ 148,552