Accounts Receivable, Allowance for Doubtful Accounts and Revenue Recognition (Details)	3 Months Ended
Jan. 31, 2013
Accounts Receivable, Allowance for Doubtful Accounts and Revenue Recognition [Abstract]
Accounts receivable, payment period from invoice date	30 days

Represents the payment period of accounts receivable from the invoice date, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	chmp_AccountsReceivablePaymentPeriodFromInvoiceDate
Namespace Prefix:	chmp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration