Note 3 - Debt (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Leverage Ratios [Table Text Block]

December 31, 2017	4.75	to	1.00
March 31, 2018	4.50	to	1.00
June 30, 2018	4.25	to	1.00
September 30, 2018	not applicable
December 31, 2018	3.50	to	1.00
March 31, 2019	not applicable
June 30, 2019	3.00	to	1.00
September 30, 2019 and thereafter	2.75	to	1.00