Note 8 - Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets:
Capitalized inventory costs	$ 265,454	$ 260,385
Warrants and share-based compensation	44,151	44,151
Accrued expenses, reserves, and other	65,631	66,444
Total deferred income tax assets	375,236	370,980
Deferred income tax liabilities:
Property and equipment depreciation	1,728,265	1,529,397
Goodwill and other intangible assets amortization	227,767	217,268
Total deferred income tax liabilities	$ 1,956,032	$ 1,746,665