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GOODWILL AND INTANGIBLE ASSETS - Summary of Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2014
Nov. 30, 2013
Intangible Assets by Major Class [Line Items]    
Net Carrying Amount $ 178,629us-gaap_IntangibleAssetsNetExcludingGoodwill $ 178,628us-gaap_IntangibleAssetsNetExcludingGoodwill
Motorsports Event    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 178,725us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
178,708us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Accumulated Amortization 96us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
80us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 178,629us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
178,628us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Amortized intangible assets:    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 119us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
102us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Accumulated Amortization 96us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
80us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 23us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
22us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Amortized intangible assets: | Food, beverage and merchandise contracts    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 10us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
10us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Accumulated Amortization 9us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
8us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 1us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
2us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_ContractualRightsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Amortized intangible assets: | Other    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 109us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
92us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Accumulated Amortization 87us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
72us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 22us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
20us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Non-amortized intangible assets:    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 178,606us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
178,606us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 178,606us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
178,606us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Non-amortized intangible assets: | NASCAR — sanction agreements    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 177,813us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
177,813us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount 177,813us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
177,813us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Motorsports Event | Non-amortized intangible assets: | Other    
Intangible Assets by Major Class [Line Items]    
Gross Carrying Amount 793us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
793us-gaap_IntangibleAssetsGrossExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
Net Carrying Amount $ 793us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember
$ 793us-gaap_IntangibleAssetsNetExcludingGoodwill
/ isca_IntangibleAssetsByAmortizationAxis
= isca_IndefiniteLivedIntangibleAssetsMember
/ isca_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
/ us-gaap_StatementBusinessSegmentsAxis
= isca_MotorsportsEventSegmentMember