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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2014	Jul. 31, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 31, 2016
Significant Accounting Policies [Line Items]
Depreciation expense			$ 13,900	$ 10,900	$ 10,400
Advertising expenses			20,100	15,800	19,300
Restricted stock compensation expense			$ 1,621	1,562	1,473
Prepaid forward contract, settlement year			2020
Long term debt, face amount			$ 206,865	215,000
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		$ 13,506	$ 13,193	$ 24,000
Convertible Senior Notes
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share			23,004,916	0	0
Options and Warrants
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share			1,500,000	1,518,596	1,601,272
Restricted Stock
Significant Accounting Policies [Line Items]
Potentially dilutive securities excluded from computation of diluted earnings per common share			0	0	0
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			$ 83,700	$ 102,000
Debt instrument, interest rate		4.25%	4.25%	4.25%
Debt instrument, maturity year			2018	2018
Long term debt, face amount		$ 100,000	$ 93,865	$ 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
Debt instrument repurchase amount			$ 6,100
4.875% Convertible Senior Notes (due 2020)
Significant Accounting Policies [Line Items]
Convertible senior note payable, fair value			$ 89,300	$ 112,300
Debt instrument, interest rate	4.875%		4.875%	4.875%
Debt instrument, maturity year			2020	2020
Long term debt, face amount	$ 115,000		$ 113,000	$ 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
Debt instrument repurchase amount						$ 2,000
Net proceeds from debt instrument	$ 110,400
China Joint Venture
Significant Accounting Policies [Line Items]
Percentage of ownership interest in joint venture			51.00%

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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