Note 9 - Leases - Lease Assets and Liabilities (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset	$ 9,671,445
Other current liabilities	628,556
Operating lease liabilities	9,160,482
Operating Lease, Liability, Total	$ 9,789,038
Operating Leases (in years) (Year)	11 years 182 days
Operating Leases	5.00%