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v3.20.2

Note 14 - Fair Value Measurements (Details Textual) gal in Millions, $ in Millions |  | 6 Months Ended
--- | --- | ---
Jan. 01, 2020 $ / gal | Jun. 30, 2020 USD ($) gal
Interest Rate Swap [Member] |  |
Derivative, Number of Instruments Held, Total |  | 2
Interest Rate Swap, One [Member] |  |
Derivative, Notional Amount | $ |  | $ 53
Interest Rate Swap, Two [Member] |  |
Derivative, Notional Amount | $ |  | $ 58
Fuel Hedge [Member] |  |
Derivative, Nonmonetary Notional Amount, Volume (Gallon) | gal |  | 1.8
Fuel Hedge [Member] | Minimum [Member] |  |
Underlying, Derivative Volume (in USD per Gallon) | $ / gal | 1.79 |
Fuel Hedge [Member] | Maximum [Member] |  |
Underlying, Derivative Volume (in USD per Gallon) | $ / gal | 2.00 |

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