XML 49 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8

Regulatory - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]
Additional reserve	$ 1,387
Accrued liabilities will be paid over the next six months	$ 2,528

X

- Definition

Additional reserve recorded under review program matter.

+ References

No definition available.

+ Details

Name:	lope_AdditionalReserveRecordedUnderReviewProgramMatter
Namespace Prefix:	lope_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount related to student assistance anticipated to be paid .

+ References

No definition available.

+ Details

Name:	lope_AmountRelatedToStudentAssistanceAnticipatedToBePaid
Namespace Prefix:	lope_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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