Inventories - Activity in Inventory Reserve (Detail) (USD $)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Inventory [Line Items]
Inventory Reserves, Beginning balance	$ 736,060	$ 752,309	$ 777,592	$ 699,400
Additional Reserves			82,363
Usage	(16,249)	(25,283)	(4,171)
Inventory Reserves, Ending balance	736,060	752,309	777,592	699,400
NUEDEXTA [Member]
Inventory [Line Items]
Inventory Reserves, Beginning balance	40,831	57,080	82,363
Additional Reserves			82,363
Usage	(16,249)	(25,283)
Inventory Reserves, Ending balance	40,831	57,080	82,363
Docosanol [Member]
Inventory [Line Items]
Inventory Reserves, Beginning balance	316,400	316,400	316,400	316,400
Inventory Reserves, Ending balance	316,400	316,400	316,400	316,400
Dm and Q [Member]
Inventory [Line Items]
Inventory Reserves, Beginning balance	378,829	378,829	378,829	383,000
Usage			(4,171)
Inventory Reserves, Ending balance	$ 378,829	$ 378,829	$ 378,829	$ 383,000