New Accounting Guidance and Adoption of New Accounting Guidance - Additional Information (Detail)	12 Months Ended
Dec. 31, 2012
New Accounting Pronouncement, Early Adoption [Line Items]
Minimum threshold percentage for qualitative goodwill impairment test	50.00%

Minimum threshold percentage for qualitative goodwill impairment test

No definition available.

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Namespace Prefix:	jah_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration