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Subsequent Events - Additional Information (Detail) - Toys 'R' Us - USD ($) $ in Millions | Mar. 15, 2018 | Dec. 31, 2017
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Subsequent Event [Line Items] |  |
Pre-petition consolidated accounts receivable, gross |  | $ 22.8
Post-petition consolidated accounts receivable, gross |  | 18.6
Pre-petition consolidated accounts receivable, reserved |  | $ 8.9
Subsequent Event |  |
Subsequent Event [Line Items] |  |
Pre-petition consolidated accounts receivable, gross | $ 22.8 |
Post-petition consolidated accounts receivable, gross | 13.1 |
Claim filed with insurance carrier | 13.9 |
Post and pre-petition consolidated accounts receivable, net | 22.0 |
Pre-petition consolidated accounts receivable, reserved | 8.9 |
Net exposure | $ 13.1 |

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- Definition Post and Pre-petition Bankruptcy Receivables + References No definition available. + Details
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Namespace Prefix: | jakk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Post-petition Bankruptcy Receivables + References No definition available. + Details
Name: | jakk_PostpetitionBankruptcyReceivables
Namespace Prefix: | jakk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Prepetition Bankruptcy Net Exposure + References No definition available. + Details
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Namespace Prefix: | jakk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Prepetition bankruptcy receivables. + References No definition available. + Details
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Namespace Prefix: | jakk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Definition Costs of settling insured claims and costs incurred in the claims settlement process for the specified year specifically for claims that have already been submitted to the insurance company for reimbursement. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |