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v3.20.1

Note 3 - Debt (Tables) | 6 Months Ended
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Jun. 30, 2019
Notes Tables |
Schedule of Leverage Ratios [Table Text Block] |
December 31, 2017 |  | 4.75 | to | 1.00 |
June 30, 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 |

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