Note 9 - Income Taxes - Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss carryforwards	$ 13,676,000	$ 13,500,000
Depreciation	313,000	90,000
Non-cash compensation	279,000	370,000
Other	23,000
Valuation Allowance	(12,670,000)	(12,339,000)
Deferred tax asset	$ 1,621,000	$ 1,621,000