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ACCOUNTING STANDARDS ADOPTIONS (Details)	Dec. 31, 2015 USD ($)
ACCOUNTING STANDARDS ADOPTIONS [Abstract]
Reclassification of debt issuance cost from other assets to long term debt, less current portion	$ 3,985,000

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- Definition

Amount of reclassification of debt issuance cost from other assets to long term debt, less current portion.

+ References

No definition available.

+ Details

Name:	kex_ReclassificationOfDebtIssuanceCostFromOtherAssetsToLongTermDebtLessCurrentPortion
Namespace Prefix:	kex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration