Note 14 - Consolidated Condensed Statements of Cash Flows Reclassifications (Details Textual) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Net Cash Provided by (Used in) Operating Activities, Total	$ 104,067	$ 75,101
Net Cash Provided by (Used in) Investing Activities, Total	$ (59,190)	(45,770)
Reclassification Of Tires In Service Amortization And Operating Leases [Member]
Net Cash Provided by (Used in) Operating Activities, Total		1,600
Net Cash Provided by (Used in) Investing Activities, Total		$ (1,600)

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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