Note 6 - Other Current Liabilities (Details) - Other Current Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Current Liabilities [Abstract]
Accrued payroll and payroll taxes	$ 65us-gaap_AccruedPayrollTaxesCurrent	$ 112us-gaap_AccruedPayrollTaxesCurrent
Warranty accrual	97us-gaap_ProductWarrantyAccrual	104us-gaap_ProductWarrantyAccrual
Accrued expenses and other	183us-gaap_OtherAccruedLiabilitiesCurrent	229us-gaap_OtherAccruedLiabilitiesCurrent
	$ 345us-gaap_OtherLiabilitiesCurrent	$ 445us-gaap_OtherLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

+ References+ Details