Summary of Significant Accounting Policies (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Property and Equipment
Gross Property and Equipment	$ 5,781,000		$ 5,697,000
Accumulated depreciation and amortization	(4,099,000)		(3,944,000)
Net Property and Equipment	1,682,000		1,753,000
Depreciation expense	155,000	174,000
Production tooling, machinery and equipment
Property and Equipment
Gross Property and Equipment	3,908,000		3,826,000
Office furniture and fixtures
Property and Equipment
Gross Property and Equipment	260,000		260,000
Computer equipment and software
Property and Equipment
Gross Property and Equipment	913,000		896,000
Web site
Property and Equipment
Gross Property and Equipment	65,000		65,000
Leasehold improvements
Property and Equipment
Gross Property and Equipment	616,000		616,000
Construction in-progress
Property and Equipment
Gross Property and Equipment	$ 19,000		$ 34,000