Use of Estimates	6 Months Ended
Jun. 30, 2018
Use of Estimates [Abstract]
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. There were no significant changes in estimates and assumptions used by management related to our critical accounting policies during the three and six months ended June 30, 2018, except in relation to estimated revenue for in-process loads of freight in accordance with the adoption of ASU 2014-09, Revenue from Contracts with Customers (Topic 606), See Note 4 for additional discussions.

Use of Estimates

6 Months Ended

Jun. 30, 2018

The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. There were no significant changes in estimates and assumptions used by management related to our critical accounting policies during the three and six months ended June 30, 2018, except in relation to estimated revenue for in-process loads of freight in accordance with the adoption of ASU 2014-09, Revenue from Contracts with Customers (Topic 606), See Note 4 for additional discussions.