Balance Sheet Detail (in thousands) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Inventories
Finished products	$ 5	$ 5
Accrued Expenses
Accrued payroll	76	59
Accrued vacation	271	222
Accrued warranty expense	3	3
Accrued interest	130	54
Deferred rent		43
Other	68	80
Total Accrued expenses	$ 548	$ 461