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Note 10 - Business Segments - Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets	$ 3,770,395	$ 3,828,988
Operating Segments [Member] | JBI [Member]
Assets	2,020,000	2,032,000
Operating Segments [Member] | DCS [Member]
Assets	942,000	951,000
Operating Segments [Member] | ICS [Member]
Assets	121,000	136,000
Operating Segments [Member] | JBT [Member]
Assets	282,000	279,000
Operating Segments [Member] | Corporate and Other [Member]
Assets	$ 405,000	$ 431,000

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=jbht_JBIMember
Namespace Prefix:
Data Type:	na
Balance Type:
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X

- Details

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X

- Details

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- Details

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X

- Details

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Balance Type:
Period Type: