Name:	cuo_OperatingLeasesRentExpectedFutureReimbursementCurrent
Namespace Prefix:	cuo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of expected lease rent reimbursement for operating leases having an initial or remaining non-cancelable lease term in excess of one year in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	cuo_OperatingLeasesRentExpectedFutureReimbursementCurrentInYearTwo
Namespace Prefix:	cuo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of expected lease rent reimbursement for operating leases having an initial or remaining non-cancelable lease term in excess of one year in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	cuo_OperatingLeasesRentExpectedFutureReimbursementInYearFive
Namespace Prefix:	cuo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	cuo_OperatingLeasesRentExpectedFutureReimbursementInYearFour
Namespace Prefix:	cuo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of expected lease rent reimbursement for operating leases having an initial or remaining non-cancelable lease term in excess of one year in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	cuo_OperatingLeasesRentExpectedFutureReimbursementInYearThree
Namespace Prefix:	cuo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.