Name:	isle_LossContingencyAccrualInsuranceRelatedAssessmentDiscountAmount
Namespace Prefix:	isle_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the amount of change in the discount for the self-insurance reserve.

No definition available.

Name:	isle_SelfInsuranceReserveChangeInDiscount
Namespace Prefix:	isle_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

Name:	isle_SelfInsuranceReserveCurrentAdditionsAbstract
Namespace Prefix:	isle_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the amount of self-insurance charged to expenses.

No definition available.

Name:	isle_SelfInsuranceReserveCurrentChargedToExpenses
Namespace Prefix:	isle_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the amount of employee contributions toward the company's self insurance.

No definition available.

Name:	isle_SelfInsuranceReserveCurrentEmployeeContributions
Namespace Prefix:	isle_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the amount of self-insurance current payments.

No definition available.

Name:	isle_SelfInsuranceReserveCurrentPayments
Namespace Prefix:	isle_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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

The rate applied as of the balance sheet date to reduce the undiscounted amount of a guarantee fund and other insurance-related assessments to present value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 405
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301

Name:	us-gaap_LossContingencyAccrualInsuranceRelatedAssessmentDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer).

No definition available.