Note 11 - Equity Investment	6 Months Ended
Jun. 30, 2019
Notes to Financial Statements
Business Combination Disclosure [Text Block]	(11) 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 $1.2 million and $3.2 million of our revenue for loads transported by our tractors and arranged by MWL in the first six months of 2019 and 2018, respectively. As of June 30, 2019, we also had a trade receivable in the amount of $407,000 from MWL and an accrued liability of $1.4 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.

Note 11 - Equity Investment

6 Months Ended

Jun. 30, 2019

Business Combination Disclosure [Text Block]

(11) 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 $1.2 million and $3.2 million of our revenue for loads transported by our tractors and arranged by MWL in the first six months of 2019 and 2018, respectively. As of June 30, 2019, we also had a trade receivable in the amount of $407,000 from MWL and an accrued liability of $1.4 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.