Balance Sheet Account Detail Property Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 14,181		$ 14,181		$ 12,896
Accumulated depreciation	(9,144)		(9,144)		(7,912)
Property and equipment, net	5,037		5,037		4,984
Depreciation expense	475	336	1,589	1,003
Production equipment, molds, and office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	7,668		7,668		7,256
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	3,184		3,184		2,265
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	3,055		3,055		2,819
Construction in progress (software and related implementation, production equipment, and leasehold improvements)
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 274		$ 274		$ 556