Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended			0 Months Ended
	Jan. 29, 2013	Mar. 31, 2013	Mar. 31, 2013	Sep. 30, 2012	Apr. 30, 2008 sqft	Apr. 17, 2013 Termination Agreement [Member]	Mar. 31, 2013 Alabama Jobs Commitment	Jan. 29, 2013 Alabama Jobs Commitment	Dec. 31, 2012 Alabama Jobs Commitment
Commitments and Contingencies [Line Items]
Accrual in discontinued operations		$ 100,000	$ 100,000
Unreimbursed legal expenses			1,000,000
Additional shares of common stock to stockholders			480,059
Additional maximum amount payable on successful achievement of specified milestones to sellers of PR Pharma		2,500,000	2,500,000
Indemnification period			5 years
Office and warehouse facility					286,000
Current liabilities of discontinued operations		271,000	271,000	1,640,000			200,000	1,700,000	1,700,000
Payment in settlement of retained liability	325,000
Retained liability settled amount	1,500,000					200,000
Gain in discontinued operations		$ 1,200,000				$ 200,000