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v2.4.1.9

Related Party Transactions (Details) (USD $) Share data in Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Hollywood Camp [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership percentage (in hundredths) | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_HollywoodCampMember |  |
Facility expenses | $ 1,634,000 us-gaap_FacilityCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_HollywoodCampMember | $ 1,112,000 us-gaap_FacilityCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_HollywoodCampMember | $ 463,000 us-gaap_FacilityCosts / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_HollywoodCampMember
Amy D. Husted [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Legal services | 1,184,000 us-gaap_LegalFees / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_VicePresidentMember | 851,000 us-gaap_LegalFees / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_VicePresidentMember | 384,000 us-gaap_LegalFees / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_VicePresidentMember
William M. Waterman [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Cash portion of purchase price |  |  | 24,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_VicePresidentAndControllerMember
Number of shares held in escrow (in shares) |  |  | 83,825 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_VicePresidentAndControllerMember
Escrow Account Termination Date | March 31, 2014 |  |
Claim to escrow distribution | 17,000 kex_ClaimToEscrowDistribution / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_VicePresidentAndControllerMember |  |
Richard J. Alario [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Oilfield service equipment | $ 1,232,000 kex_OilfieldServiceEquipment / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_RichardJAlarioMember | $ 1,973,000 kex_OilfieldServiceEquipment / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_RichardJAlarioMember | $ 13,152,000 kex_OilfieldServiceEquipment / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = kex_RichardJAlarioMember

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- Definition The escrow account was terminated on this date. + References No definition available. + Details
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- Definition Refers ton the amount paid related to oilfield service equipment. + References No definition available. + Details
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Balance Type: | debit
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition Facility expenses incurred related to gas and oil produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447 + Details
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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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