XML 18 R8.htm IDEA: XBRL DOCUMENT v2.4.0.6

Revenue Recognition	9 Months Ended
	Jan. 31, 2013
Revenue Recognition [Abstract]
Revenue Recognition	3. Revenue Recognition The Company recognizes retail sales of gasoline, grocery and general merchandise, prepared food and fountain and commissions on lottery, prepaid phone cards, and video rentals at the time of the sale.  Vendor rebates in the form of rack display allowances are treated as a reduction in cost of sales and are recognized pro rata over the period covered by the applicable rebate agreement.  Vendor rebates in the form of billbacks are treated as a reduction in cost of sales and are recognized at the time the product is sold.

X

- Definition

Revenue Recognition [Text Block]

+ References

No definition available.

+ Details

Name:	casy_RevenueRecognitionTextBlock
Namespace Prefix:	casy_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

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