Number of customers

No definition available.

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- Definition

Post and ore-petition bankruptcy receivables.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Pre and post-petition bankruptcy receivables.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Prepetition Bankruptcy Receivables, Reserve.

+ References

No definition available.

+ Details

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- Definition

Proceeds From Post-petition Consolidated Accounts Receivable

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseReportedClaimsAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Details

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- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=jakk_LargestCustomerMember
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Business Segments, Geographic Data, and Sales by Major Customers - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($)	Mar. 31, 2018 USD ($) Segment Customer	Dec. 31, 2017 Segment Customer	Mar. 15, 2018 Store
Segment Reporting Information [Line Items]
Number of reporting segments \| Segment		3	3
Toys "R" Us
Segment Reporting Information [Line Items]
Pre and post-petition gross accounts receivable		$ 35.1
Pre-petition consolidated accounts receivable, reserved		$ 22.5
Toys "R" Us \| United States
Segment Reporting Information [Line Items]
Number of stores \| Store				735
Subsequent Event \| Toys "R" Us
Segment Reporting Information [Line Items]
Claim filed with insurance carrier	$ 12.0
Proceeds from post-petition consolidated accounts receivable	0.6
Post and pre-petition consolidated accounts receivable, net	$ 22.5
Net Accounts Receivable \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Number of major customers \| Customer		3	3
Net Accounts Receivable \| Toys "R" Us \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage		29.40%	26.40%
Net Accounts Receivable \| Three Largest Customers \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage		58.40%	60.60%