Note 6 - Long-term Debt - Schedule of Long-term Debt (Details) (Parentheticals) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
First Lien Credit Facilities [Member] | Revolving Credit Facility [Member]
Effective interest rate	4.50%	0.00%
First Lien Credit Facilities [Member] | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Interest rate	3.50%	0.00%
First Lien Credit Facilities [Member] | Base Rate [Member] | Revolving Credit Facility [Member]
Interest rate	3.50%	0.00%
Term Loan [Member] | First Lien Credit Facilities [Member]
Unamortized discount and costs	$ 8.5	$ 9.0
Term Loan [Member] | First Lien Credit Facilities [Member]
Effective interest rate	5.20%
Term Loan [Member] | First Lien Credit Facilities [Member] | London Interbank Offered Rate (LIBOR) [Member]
Interest rate	3.50%	3.50%
Term Loan [Member] | First Lien Credit Facilities [Member] | Base Rate [Member]
Interest rate	3.50%	3.50%