Note 9 - Income Taxes (Detail) - Deferred Tax Asset (USD $)	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets
Net operating loss carryforward	$ 24,631,963	$ 24,900,758
Accrued expenses not currently deductible	1,176,721	1,160,472
Prepaid expenses	(182,139)	(154,534)
Net deferred tax asset before valuation allowance	24,800,044	24,815,842
Valuation allowance	(22,625,044)	(24,199,842)
Net deferred tax asset after valuation allowance	2,175,000	616,000
Deferred Tax Assets [Member]
Deferred Tax Assets
Depreciation different for tax purposes	1,054,235	1,008,598
Deferred Tax Asset Total	26,862,919	27,069,828
Deferred Tax Liability [Member]
Deferred Tax Assets
Depreciation different for tax purposes	(1,880,736)	(2,099,452)
Deferred Tax Liabilities Total	$ (2,062,875)	$ (2,253,986)