Note 11 - Income Taxes (Details) - Significant Components of Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Significant Components of Deferred Tax Assets [Abstract]
Net federal and state operating loss carryforwards	$ 22,939	$ 24,689
Net foreign operating loss carryforwards	523	380
Accrued expenses and reserves	(2)
Tax credits	1,212	1,194
Other	476	295
Total deferred tax assets	25,148	26,558
Valuation allowance	$ (25,148)	$ (26,558)