Note 4 - Senior Credit Facility and Other Long Term Debt - Interest Rates (Details)	Dec. 31, 2019	Jun. 30, 2019
Revolving Credit Facility [Member] | Base Rate [Member]
Interest rate	4.75%	5.50%
Revolving Credit Facility [Member] | Eurodollar [Member]
Interest rate	4.30475%	4.881%
Term Loan [Member] | Base Rate [Member]
Interest rate	5.00%	5.75%
Term Loan [Member] | Eurodollar [Member] | Minimum [Member]
Interest rate	4.792%	5.381%
Term Loan [Member] | Eurodollar [Member] | Maximum [Member]
Interest rate	4.80475%	5.3838%