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Related Party Transactions - Additional Information (Detail) - USD ($)			1 Months Ended			2 Months Ended	12 Months Ended
	Aug. 09, 2019	Apr. 27, 2017	Jan. 31, 2019	Jul. 31, 2018	Jan. 31, 2018	Feb. 28, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 31, 2019	Jul. 26, 2018	Aug. 31, 2017	Oct. 31, 2016	Jul. 31, 2013
Related Party Transaction [Line Items]
Net income (loss) attributable to non-controlling interests							$ 169,000	$ (57,000)	$ 57,000
Common stock issued (in shares)	5,853,002
Common stock issued, value	$ 4,200,000						4,214,000
Long term debt, face amount							52,658,000	140,974,000
3.25% Convertible Senior Notes Due 2020
Related Party Transaction [Line Items]
Long term debt, face amount							$ 0	27,974,000				$ 8,000,000.0
Debt instrument, interest rate							3.25%					3.25%
4.25% Convertible Senior Notes Due 2018
Related Party Transaction [Line Items]
Long term debt, face amount															$ 100,000,000.0
Debt instrument, interest rate							4.25%					4.25%	4.25%		4.25%
3.25% Convertible Senior Notes Due 2023
Related Party Transaction [Line Items]
Joint venture, ownership percentage											49.00%
Long term debt, face amount							$ 50,753,000	$ 0
Debt instrument, interest rate							3.25%				3.25%	3.25%
Interest rate if paid in cash											3.25%
Interest rate if paid in stock											5.00%
Paid in kind interest rate											2.75%
Non-employee directors
Related Party Transaction [Line Items]
Restricted stock issued (in shares)		13,319	328,230		249,480	94,102	54,704	41,580
Restricted stock issued, value		$ 100,000	$ 500,000		$ 600,000	$ 500,000	$ 100,000
Hong Kong Meisheng Cultural Co
Related Party Transaction [Line Items]
Net income (loss) attributable to non-controlling interests									0
Hong Kong Meisheng Cultural Co \| Non-employee directors
Related Party Transaction [Line Items]
Restricted stock issued (in shares)		13,319
Restricted stock issued, value		$ 100,000
Related Party Transactions
Related Party Transaction [Line Items]
Legal fees and expenses							1,500,000	$ 1,300,000	2,200,000
Legal fees and reimbursable expense, payable							100,000	200,000
Nantworks
Related Party Transaction [Line Items]
Due to related party										$ 1,200,000
Renewal fee paid										800,000
Renewal fee payable, each period										$ 200,000
Related party, receivable							0	0
Rent expense							0
Rent expense including common area maintenance and parking								0	0
China Joint Venture
Related Party Transaction [Line Items]
Net income (loss) attributable to non-controlling interests							$ 169,000	(57,000)	$ 57,000
Joint venture, ownership percentage							51.00%
Hong Kong Meisheng Cultural Co
Related Party Transaction [Line Items]
Net income (loss) attributable to non-controlling interests							$ 0	0
Joint venture, ownership percentage														50.00%
Joint Venture With Meisheng Culture & Creative Corp.
Related Party Transaction [Line Items]
Joint venture, ownership percentage							51.00%							50.00%
Hong Kong Meisheng Cultural Co \| Affiliated Entity
Related Party Transaction [Line Items]
Due to related party							$ 18,100,000	3,600,000
Inventory related payments made to related party							94,300,000	36,200,000
Hong Kong Affiliate, China Joint Venture Partner \| Affiliated Entity
Related Party Transaction [Line Items]
Common stock issued (in shares)		3,660,891
Common stock issued, value		$ 19,300,000
Oasis Management and Oasis Investments ll Master Fund Ltd. \| 3.25% Convertible Senior Notes Due 2020
Related Party Transaction [Line Items]
Long term debt, face amount							0	29,600,000.0				$ 8,000,000	$ 21,600,000
Common stock shares issued upon conversion of debt instrument, value				$ 8,000,000
Oasis Management and Oasis Investments ll Master Fund Ltd. \| 4.25% Convertible Senior Notes Due 2018
Related Party Transaction [Line Items]
Debt instrument, interest rate													4.25%
Oasis Management and Oasis Investments ll Master Fund Ltd. \| After Modification Senior Notes (due 2018)
Related Party Transaction [Line Items]
Long term debt, face amount													$ 21,600,000.0
Oasis Management and Oasis Investments ll Master Fund Ltd. \| 3.25% Convertible Senior Notes Due 2023
Related Party Transaction [Line Items]
Long term debt, face amount							37,600,000	$ 0			$ 8,000,000.0
Benefit Street Partners
Related Party Transaction [Line Items]
Long term debt, face amount							$ 25,800,000.0
Debt instrument, interest rate							10.50%
Interest rate if paid in cash							8.00%
Paid in kind interest rate							2.50%
Axar Capital Management
Related Party Transaction [Line Items]
Long term debt, face amount							$ 26,300,000.0
Debt instrument, interest rate							10.50%
Interest rate if paid in cash							8.00%
Paid in kind interest rate							2.50%
JAKKS Pacific \| Hong Kong Meisheng Cultural Co \| Minimum
Related Party Transaction [Line Items]
Ownership percentage		10.00%					10.00%
JAKKS Pacific \| Nantworks \| NantWorks
Related Party Transaction [Line Items]
Ownership percentage							5.00%