Note 17 - Subsequent Events (Details Textual) - Subsequent Event [Member] - New Credit Facility [Member] $ in Millions	Mar. 02, 2020 USD ($)
Debt Instrument, Covenant, Maximum Annual Aggregate Capital Expenditures	$ 10.5
Debt Instrument, Covenant, Maximum Annual Aggregate Capital Expenditures, 2021 and Thereafter	$ 10.0
Maximum Leverage Ratio for October 1, 2019 Through March 30, 2021	3.5
Maximum Leverage Ratio for April 1 , 2021 Through December 31, 2021	3.25
Maximum Leverage Ratio On or After January 1, 2022	3
Minimum Debt Service Coverage Ratio	1.75