Operating Leases	9 Months Ended
Sep. 30, 2017
Leases [Abstract]
Operating Leases	Operating Leases Rent expense for operating leases for revenue equipment that resulted from our IDC acquisition was $3.8 million and $3.8 million for the three and nine months ended September 30, 2017. During 2016, we leased certain revenue equipment of which the majority of these leases were with a commercial tractor dealership, which is partially owned by one of our board members. Rent expense for these leases was $0.0 million and $0.8 million (including related-party rental payments totaling zero and $0.8 million), for the three and nine months ended September 30, 2016. These expenses were included in rent and purchased transportation in the consolidated statements of comprehensive income. The 2016 leases were terminated in June 2016. We lease certain terminal facilities under operating leases. A portion of these leases are with limited liability companies, whose members include one of our board members and a commercial tractor dealership whose owners include one of our board members. The related-party rental payments were entered into as a result of a previous acquisition. Rent expenses for terminal facilities were $1.5 million and $2.5 million (including related-party rental payments totaling $0.4 million and $1.2 million), for the three and nine months ended September 30, 2017. Rent expenses for terminal facilities were $0.5 million and $1.6 million (including related-party rental payments totaling $0.5 million and $1.4 million), for the three and nine months ended September 30, 2016. These expenses were included in rent and purchased transportation in the consolidated statements of comprehensive income. The various leases expire between 2017 and 2020. A portion of these leases contain purchase options and options to renew, except the Pacific, Washington location. We have renewal options and a right of first refusal on the sale of the Pacific, Washington location property. We are responsible for all taxes, insurance, and utilities related to the terminal leases. See Note 14 for additional information regarding related party transactions.

Operating Leases

9 Months Ended

Sep. 30, 2017

Rent expense for operating leases for revenue equipment that resulted from our IDC acquisition was $3.8 million and $3.8 million for the three and nine months ended September 30, 2017. During 2016, we leased certain revenue equipment of which the majority of these leases were with a commercial tractor dealership, which is partially owned by one of our board members. Rent expense for these leases was $0.0 million and $0.8 million (including related-party rental payments totaling zero and $0.8 million), for the three and nine months ended September 30, 2016. These expenses were included in rent and purchased transportation in the consolidated statements of comprehensive income. The 2016 leases were terminated in June 2016.

We lease certain terminal facilities under operating leases. A portion of these leases are with limited liability companies, whose members include one of our board members and a commercial tractor dealership whose owners include one of our board members. The related-party rental payments were entered into as a result of a previous acquisition. Rent expenses for terminal facilities were $1.5 million and $2.5 million (including related-party rental payments totaling $0.4 million and $1.2 million), for the three and nine months ended September 30, 2017. Rent expenses for terminal facilities were $0.5 million and $1.6 million (including related-party rental payments totaling $0.5 million and $1.4 million), for the three and nine months ended September 30, 2016. These expenses were included in rent and purchased transportation in the consolidated statements of comprehensive income. The various leases expire between 2017 and 2020. A portion of these leases contain purchase options and options to renew, except the Pacific, Washington location. We have renewal options and a right of first refusal on the sale of the Pacific, Washington location property. We are responsible for all taxes, insurance, and utilities related to the terminal leases. See Note 14 for additional information regarding related party transactions.