Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2011
Earnings Per Share Disclosure [Line Items]
Number of stock options and share warrants with exercise price exceeding average market price of common stock	2.4

Number Of Stock Options And Warrants With Exercise Price Exceeding Average Market Price Of Common Stock

No definition available.

Name:	jah_NumberOfStockOptionsAndWarrantsWithExercisePriceExceedingAverageMarketPriceOfCommonStock
Namespace Prefix:	jah_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration