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Concentration of Credit Risk - Additional Information (Detail) $ in Millions | Dec. 31, 2017 USD ($)
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Toys 'R' Us |
Concentration Risk [Line Items] |
Pre-petition consolidated accounts receivable, reserved | $ 8.9

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- Definition Prepetition Bankruptcy Receivables, Reserve + References No definition available. + Details
Name: | jakk_PrepetitionBankruptcyReceivablesReserve
Namespace Prefix: | jakk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_MajorCustomersAxis=jakk_CustomerTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |