LEGAL MATTERS (Details)	1 Months Ended
Oct. 31, 2014 item
LEGAL MATTERS
Number of transit customers included as defendants in lawsuit	1

Represents the number of transit customers included in a lawsuit brought against the Company.

No definition available.

Name:	cub_NumberOfTransitCustomersIncludedInLawsuit
Namespace Prefix:	cub_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration