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Document And Entity Information
 3 Months Ended
Mar. 31, 2018
shares
Document Information [Line Items]  
Entity Registrant Name HUNT J B TRANSPORT SERVICES INC
Entity Central Index Key 0000728535
Trading Symbol jbht
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Current Reporting Status Yes
Entity Voluntary Filers No
Entity Well-known Seasoned Issuer Yes
Entity Common Stock, Shares Outstanding (in shares) 109,755,618
Document Type 10-Q/A
Document Period End Date Mar. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q1
Amendment Flag true
Amendment Description This Amendment No. 1 on Form 10-Q/A to the J. B. Hunt Transport Services, Inc., Quarterly Report on Form 10-Q, as originally filed with the Securities and Exchange Commission on April 27, 2018 (the “Original Filing”), is being filed solely to correct a typographical error in “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” The Original Filing disclosed Eastern network load volume decreased 12%, when it should have stated load volume increased 12%. Specifically, page 13 of the Original Filing included the sentence: “Transcontinental loads grew 2% during the first quarter 2018, while the Eastern network load volume was down 12% compared to the first quarter 2017.” The sentence has been amended to state the following: “Transcontinental loads grew 2% during the first quarter 2018, while the Eastern network load volume grew 12% compared to the first quarter 2017.” Except as described above, no other changes have been made to the Original Filing. We have restated the entire filing for convenience to the reader. This Form 10-Q/A does not does reflect subsequent events that may have occurred since the date of the Original Filing or amend, update or change the financial statements or any other items or disclosures in the Original Filing. In accordance with Rule 12b-5 under the Securities Exchange Act of 1934, as amended, we have included new certifications from our Chief Executive Officer and Chief Financial Officer dated the date of this Form 10-Q/A.