Selected Financial Statement Information (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts receivable, net:
Trade accounts receivable	$ 111,192	$ 103,999
Allowance for sales returns	(7,334)	(6,383)	(6,521)	(4,955)
Allowance for doubtful accounts	(11,655)	(6,544)	(7,263)	(9,411)
Accounts receivable, net	92,203	91,072
Inventories:
Raw materials	56,104	43,469
Work-in-process	328	619
Finished goods	207,060	167,646
Inventory	263,492	211,734
Property, plant and equipment, net:
Land	7,452	8,892
Buildings and improvements	64,823	79,707
Machinery and equipment	126,282	153,303
Furniture, computers and equipment	120,943	126,733
Production molds	37,493	37,539
Construction-in-process	1,553	1,155
Property, plant and equipment, gross	358,546	407,329
Accumulated depreciation	(287,205)	(318,236)
Property, plant and equipment, net	71,341	89,093
Accounts payable and accrued expenses:
Accounts payable	59,914	45,376
Accrued expenses	77,492	68,300
Accrued goods in-transit	19,714	15,345
Accounts payable and accrued expenses	157,120	129,021
Accrued employee compensation and benefits:
Accrued payroll and taxes	23,748	12,256
Accrued vacation and sick pay	7,225	7,549
Accrued commissions	612	844
Accrued employee compensation and benefits	$ 31,585	$ 20,649