Note 8 - Goodwill and Acquired Intangible Assets- Intangible Assets (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Gross carrying amount	$ 188,503,000
Accumulated amortization	(1,815,050)
Net carrying amount	186,687,950
Trade Names [Member]
Gross carrying amount	29,303,000
Accumulated amortization	(488,383)
Net carrying amount	28,814,617
Customer Relationships [Member]
Gross carrying amount	159,200,000
Accumulated amortization	(1,326,667)
Net carrying amount	$ 157,873,333