Note 8 - Goodwill and Acquired Intangible Assets - Futue Amortization Expense (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
2020	$ 10,890,300
2021	10,890,300
2022	10,890,300
2023	10,890,300
2024	10,890,300
Thereafter	132,236,450
Total	$ 186,687,950