Note 7 - Accrued Liabilities (Current) (Details) - Accrued Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accrued Liabilities [Abstract]
Accrued sales commissions and incentives	$ 280	$ 514
Accrued warranty expense	75	159	100
Accrued professional fees	50	153
Accrued payroll and related benefits	299	319
Separation accrual	247
Accrued interest		87
Accrued taxes	137	162
Accrued performance-related contingent consideration		728
Accrued other expenses	130	143
Total accrued expenses	$ 1,218	$ 2,265