XML 34 R41.htm IDEA: XBRL DOCUMENT v2.4.0.6

Stock-based Compensation (Detail Textuals)	Apr. 30, 2013
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]
Shares available for calculating intrinsic value (in shares)	14,896,066

X

- Definition

The number of stock options in-the-money as of the balance-sheet date. A stock option is said to be in-the-money when the price of the underlying instrument surpasses the strike price.

+ References

No definition available.

+ Details

Name:	cprt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyNumber
Namespace Prefix:	cprt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

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