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Note 11 - Equity Investment | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Business Combination Disclosure [Text Block] | 1 1 . Equity Investment We own a 45% equity interest in MWL, a third -party provider of logistics services to the transportation industry. A non-related party owns the other 55% equity interest in MWL. We account for our ownership interest in MWL under the equity method of accounting. We received $2.2 million, $1.2 million and $5.0 million of our revenue for loads transported by our tractors and arranged by MWL in 2017, 2016 and 2015, respectively. As of December 31, 2017, we also had a trade receivable in the amount of $1.1 million from MWL and an accrued liability of $1.8 million to MWL for the excess of payments by MWL’s customers into our lockbox account over the amounts drawn on the account by MWL.

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