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Revenue Recognition and Reserve for Sales Returns and Allowances - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Reserve for sales returns and allowances	$ 30,270	$ 17,622
Minimum
Significant Accounting Policies [Line Items]
Discount on invoiced amount of products	1.00%
Maximum
Significant Accounting Policies [Line Items]
Discount on invoiced amount of products	12.00%

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- Definition

Cash Discount Discount Rate

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+ Details

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X

- Definition

Sales Reserves and Allowances

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No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

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- Definition

Significant Accounting Policies [Line Items]

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No definition available.

+ Details

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Namespace Prefix:	jakk_
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- Details

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X

- Details

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