STOCK BASED COMPENSATION Schedule of stock option by exercise price range (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012
$2.26 - $174.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 2.26
Range of Exercise Price, Upper Limit (in dollars per share)	$ 174.80
Number of Outstanding Options (in shares)	1,813
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 7 months 10 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 16.57
Number of Exercisable Options (in shares)	998
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 26.93
$2.26 - $2.85
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 2.26
Range of Exercise Price, Upper Limit (in dollars per share)	$ 2.85
Number of Outstanding Options (in shares)	370
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	9 years 2 months 19 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 2.54
Number of Exercisable Options (in shares)	81
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 2.54
3.33 - 4.10
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 3.33
Range of Exercise Price, Upper Limit (in dollars per share)	$ 4.10
Number of Outstanding Options (in shares)	68
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 7 months 10 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.46
Number of Exercisable Options (in shares)	38
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.51
4.36 - 4.36
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 4.36
Range of Exercise Price, Upper Limit (in dollars per share)	$ 4.36
Number of Outstanding Options (in shares)	365
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 2 months 9 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 4.36
Number of Exercisable Options (in shares)	92
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 4.36
4.60 - 5.14
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 4.60
Range of Exercise Price, Upper Limit (in dollars per share)	$ 5.14
Number of Outstanding Options (in shares)	22
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 0 months 26 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 4.83
Number of Exercisable Options (in shares)	13
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 4.90
5.20 - 174.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit (in dollars per share)	$ 5.20
Range of Exercise Price, Upper Limit (in dollars per share)	$ 174.80
Number of Outstanding Options (in shares)	988
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 10 months 17 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 27.51
Number of Exercisable Options (in shares)	774
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 33.66