Stockholders' Equity - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Funko Acquisition Holdings, L.L.C.
Stock Options
Outstanding beginning (in shares)	146
Exercised (in shares)	(146)
Outstanding ending (in shares)	0	146
Options exercisable (in shares)	0
Weighted Average Exercise Price
Outstanding beginning (in dollars per share)	$ 0.05
Exercised (in dollars per share)	0.05
Outstanding ending (in dollars per share)	0	$ 0.05
Weighted Average Exercise Price, Options exercisable (in dollars per share)	$ 0
Aggregate Intrinsic Value, Outstanding	$ 1,590
Aggregate Intrinsic Value, Exercised	1,078
Aggregate Intrinsic Value, Outstanding	0	$ 1,590
Aggregate Intrinsic Value, Options exercisable	$ 0
Remaining Contractual Life, Outstanding	0 years	4 months 28 days
Remaining Contractual Life, Options exercisable	0 years
2017 Plan
Stock Options
Outstanding beginning (in shares)	3,860
Granted (in shares)	874
Exercised (in shares)	(162)
Forfeited (in shares)	(1,676)
Outstanding ending (in shares)	2,896	3,860
Options exercisable (in shares)	1,811
Weighted Average Exercise Price
Outstanding beginning (in dollars per share)	$ 15.40
Granted (in dollars per share)	10.90
Exercised (in dollars per share)	4.61
Forfeited (in dollars per share)	15.67
Outstanding ending (in dollars per share)	14.49	$ 15.40
Weighted Average Exercise Price, Options exercisable (in dollars per share)	$ 14.90
Aggregate Intrinsic Value, Outstanding	$ 3,455
Aggregate Intrinsic Value, Granted	0
Aggregate Intrinsic Value, Exercised	559
Aggregate Intrinsic Value, Forfeited	704
Aggregate Intrinsic Value, Outstanding	845	$ 3,455
Aggregate Intrinsic Value, Options exercisable	$ 770
Remaining Contractual Life, Outstanding	6 years 10 months 2 days	7 years 2 months 15 days
Remaining Contractual Life, Options exercisable	5 years 8 months 19 days