Discontinued Operations (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 28, 2013
Discontinued Operations [Abstract]
Reclassification from accumulated other comprehensive income, related to discontinued operations	$ 2.9

Reclassification from accumulated other comprehensive income, related to discontinued operations

No definition available.

Name:	atx_ReclassificationFromAccumulatedOtherComprehensiveIncomeRelatedToDiscontinuedOperations
Namespace Prefix:	atx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration