Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended
	Jun. 30, 2020		Mar. 31, 2020	[1]	Jun. 30, 2019		Mar. 31, 2019	[1]	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Net Loss	$ (23,268)	[1]	$ (11,998)		$ (22,485)	[1]	$ (29,127)		$ (35,266)	$ (51,612)
Other comprehensive income (loss):
Foreign currency translation adjustment	81	[1]	$ (1,634)		(450)	[1]	$ 1,303		(1,553)	853
Comprehensive loss	(23,187)				(22,935)				(36,819)	(50,759)
Less: Comprehensive income attributable to non-controlling interests	8				57				48	88
Comprehensive loss attributable to JAKKS Pacific, Inc.	$ (23,195)				$ (22,992)				$ (36,867)	$ (50,847)

[1] After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.