SEGMENT INFORMATION (Major Customers) (Details)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Arrowhead [Member] | Sales [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	12.10%	0.40%
Arrowhead [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	18.50%	4.60%
Principia Biopharma [Member] | Sales [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	8.70%	0.40%
Principia Biopharma [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	8.40%	7.10%
Boehringer Ingelheim [Member] | Sales [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	5.90%	6.00%
Boehringer Ingelheim [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	2.50%	2.60%
Pfizer, Inc. [Member] | Sales [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.70%	1.50%
Pfizer, Inc. [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	4.90%	3.30%