Balance Sheet Account Detail (Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 38,999		$ 38,999		$ 34,838
Accumulated depreciation	(14,840)		(14,840)		(11,483)
Property and equipment, net	24,159		24,159		23,355
Depreciation expense	1,300	$ 1,200	3,900	$ 3,400
Production equipment, molds, and office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	14,732		14,732		13,603
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	7,392		7,392		6,380
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	15,495		15,495		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	$ 1,380		$ 1,380		$ 510