STOCK BASED COMPENSATION Activity under all stock option plans (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Mar. 31, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, Shares, Beginning balance	2,089
Options outstanding, Weighted average exercise price, Beginning balance	$ 13.43
Options outstanding, Weighted average remaining contractual life (in years), Beginning balance	7 years 5 months 19 days	6 years 8 months 1 day
Options outstanding, Aggregate intrinsic value, Beginning balance	$ 591
Shares, Granted	1,014
Weighted average exercise price, Granted	$ 2.53
Shares, Exercised	(21)
Weighted average exercise price, Exercised	$ 2.29
Shares, Cancelled or expired	(68)
Weighted average exercise price, Cancelled or expired	$ 108.50
Options outstanding, Shares, Ending balance	3,014	2,089
Options outstanding, Weighted average exercise price, Ending balance	$ 7.67	$ 13.43
Options outstanding, Weighted average remaining contractual life (in years), Ending balance	7 years 5 months 19 days	6 years 8 months 1 day
Options outstanding, Aggregate intrinsic value, Ending balance	3,214	591
Options exercisable, Shares, Ending balance	1,687
Options exercisable, Weighted average exercise price, Ending balance	$ 11.66
Options exercisable, Weighted average remaining contractual life (in years), Ending balance	6 years 1 month 2 days
Aggregate intrinsic value, Options exercisbale	$ 1,062