RETIREMENT SAVINGS PLAN (Narrative) (Details) (Foreign Subsidiary, USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Foreign Subsidiary
Defined Contribution Plan [Line Items]
Employer contibution	$ 0.6	$ 0.7	$ 0.3

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration