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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			12 Months Ended
	Jan. 31, 2016	Jun. 30, 2014	Jul. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Nov. 01, 2014	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Reserve for sales returns and allowances				$ 17,267	$ 24,477
Decrease reserve for sales returns and allowances				(7,210)	(6,897)		$ (2,999)
Depreciation expense				10,900	10,400		11,800
Advertising expenses				15,800	19,300		10,100
Restricted stock compensation expense				$ 1,562	1,473		1,085
Prepaid forward contract, settlement year				2020
Repurchase of notes					39,000		$ 61,000
Repurchase of common stock under prepaid forward repurchase agreement, shares		3,112,840
Repurchase of common stock, average price per share		$ 7.71
Payment for repurchase of common stock		$ 24,000		$ 13,193	$ 24,000
Convertible Senior Notes
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share				0	0		10,037,523
Options and Warrants
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share				1,518,596	1,601,272		1,627,144
Restricted Stock
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share				0	0		111,195
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				6.00%
Molds and tools
Significant Accounting Policies [Line Items]
Property and equipment useful life				2 years
4.25% Convertible Senior Notes (due 2018)
Significant Accounting Policies [Line Items]
Convertible senior note payable, fair value				$ 102,000	$ 96,300
Debt instrument, interest rate			4.25%	4.25%	4.25%
Debt instrument, maturity year				2018	2018
Long term debt, face amount			$ 100,000
Debt instrument, maturity date			Aug. 01, 2018
Frequency of interest payment				Semi-annually
Conversion rate in share per $1000 principal amount of notes			114.3674
Debt instrument, conversion rate			$ 8.74
Net proceeds from debt instrument			$ 96,000
4.875% Convertible Senior Notes (due 2020)
Significant Accounting Policies [Line Items]
Convertible senior note payable, fair value				$ 112,300	$ 100,900
Debt instrument, interest rate		4.875%		4.875%	4.875%
Debt instrument, maturity year				2020	2020
Long term debt, face amount		$ 115,000
Debt instrument, maturity date		Jun. 01, 2020
Frequency of interest payment				Semi-annually
Conversion rate in share per $1000 principal amount of notes		103.7613
Debt instrument, conversion rate		$ 9.64
Net proceeds from debt instrument		$ 110,400
Repurchase of notes						$ 39,000
Repurchase of common stock under prepaid forward repurchase agreement, shares		3,100,000
Payment for repurchase of common stock		$ 24,000
4.875% Convertible Senior Notes (due 2020) | Subsequent Event
Significant Accounting Policies [Line Items]
Repurchase of notes	$ 2,000
Payment for repurchase of common stock	$ 2,000
Meisheng Culture & Creative Corp.
Significant Accounting Policies [Line Items]
Percentage of ownership interest in joint venture				51.00%

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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