Balance Sheet Account Detail (Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 38,731		$ 34,838
Accumulated depreciation	(12,783)		(11,483)
Property and equipment, net	25,948		23,355
Depreciation expense	1,300	$ 1,100
Production equipment, molds, and office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	15,017		13,603
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	7,363		6,380
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	15,452		14,345
Construction in progress (software and related implementation, production equipment, and leasehold improvements)
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 899		$ 510