Inventories Long term contracts percentage-of-completion accounting (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 28, 2014
Inventory Disclosure [Abstract]
Net increase (decrease) in operating income from the quarterly impact of revisions in contracts	$ 0.8

Net increase (decrease) in operating income from the quarterly impact of revisions in contracts

No definition available.

Name:	kamn_NetIncreaseDecreaseInOperatingIncomeFromQuarterlyImpactOfRevisionsInContracts
Namespace Prefix:	kamn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration