FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Financial assets measured at fair value on a recurring basis [Abstract]
Money market	$ 8,253	$ 1,045
US Treasury bills		7,200
Total		8,245
Level 1 [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Money market	8,253	1,045
US Treasury bills		7,200
Total		8,245
Level 2 [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Money market	0	0
US Treasury bills		0
Total		0
Level 3 [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Money market	0	0
US Treasury bills		0
Total		$ 0