Note 18 - Restatement (Details) - Net Deferred Tax Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Federal, state and foreign loss carryforwards	$ 3,862,000	$ 6,527,000
Capital loss carryforward	3,570,000
Capitalized research and development		475,000
Deferred revenue	71,000us-gaap_DeferredTaxAssetsDeferredIncome	77,000us-gaap_DeferredTaxAssetsDeferredIncome
Federal and state tax credits	520,000	1,762,000
Other	503,000us-gaap_DeferredTaxAssetsOther	563,000us-gaap_DeferredTaxAssetsOther
Total deferred tax asset	8,526,000us-gaap_DeferredTaxAssetsGross	9,404,000us-gaap_DeferredTaxAssetsGross
Less valuation allowance	(8,526,000)	(9,404,000)
Net deferred tax asset	0us-gaap_DeferredTaxAssetsLiabilitiesNet
Scenario, Previously Reported [Member]
Deferred tax assets:
Federal, state and foreign loss carryforwards	7,039,000
Capitalized research and development	241,000
Deferred revenue	71,000
Federal and state tax credits	2,269,000
Other	503,000
Total deferred tax asset	10,123,000
Less valuation allowance	(10,123,000)
Net deferred tax asset	$ 0

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