Note 8 - Net Deferred Tax Liability (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current deferred tax assets	$ 326,830	$ 371,491
Long-term deferred tax liabilities	(1,702,515)	(1,458,005)
Net deferred tax asset (liability)	$ (1,375,685)	$ (1,086,514)