Subsequent Events	6 Months Ended
Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Events, Policy [Policy Text Block]	Subsequent Events On July 6, 2017, we acquired 100% of the outstanding stock of Interstate Distributor Co. of Tacoma, Washington ("IDC") from Saltchuk Resources, Inc. ("Saltchuk"). The acquisition allows us to add high quality drivers, experienced personnel, and a strong customer base to our operations. We gained additional traffic density in the West, and our stronger Eastern network will improve service for IDC's customers in the East. We have not completed the initial accounting for the acquisition and we are still collecting certain pre-acquisition financial information to complete our supplemental proforma information. The transaction enterprise value was approximately $113 million and includes approximately $94 million in cash for the equity, $23 million in assumed debt, and $4 million in acquired cash.

Subsequent Events

6 Months Ended

Jun. 30, 2017

Subsequent Events, Policy [Policy Text Block]

Subsequent Events

On July 6, 2017, we acquired 100% of the outstanding stock of Interstate Distributor Co. of Tacoma, Washington ("IDC") from Saltchuk Resources, Inc. ("Saltchuk"). The acquisition allows us to add high quality drivers, experienced personnel, and a strong customer base to our operations. We gained additional traffic density in the West, and our stronger Eastern network will improve service for IDC's customers in the East. We have not completed the initial accounting for the acquisition and we are still collecting certain pre-acquisition financial information to complete our supplemental proforma information. The transaction enterprise value was approximately $113 million and includes approximately $94 million in cash for the equity, $23 million in assumed debt, and $4 million in acquired cash.