Balance Sheet Account Detail Property Plant and Equipment (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 21,343,000		$ 16,975,000
Accumulated depreciation	(10,119,000)		(9,637,000)
Property and equipment, net	11,224,000		7,338,000
Depreciation expense	500,000	400,000
Production equipment, molds, and office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	8,254,000		8,033,000
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	3,402,000		3,290,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	3,055,000		3,058,000
Construction in progress (software and related implementation, production equipment, and leasehold improvements)
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 6,632,000		$ 2,594,000