Discontinued Operations - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended			0 Months Ended
	Jan. 29, 2013	Nov. 17, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2012	Apr. 17, 2013 Termination Agreement [Member]	Mar. 31, 2013 Alabama Jobs Commitment	Jan. 29, 2013 Alabama Jobs Commitment	Dec. 31, 2012 Alabama Jobs Commitment
Discontinued Operations [Line Items]
Total consideration received from the Pharma Sale		$ 30,000,000
Restricted time period for competition		5 years
Loss on sale of discontinued operations, before income taxes				26,000		(1,634,000)
Loss on sale of discontinued operations, net of income taxes				121,000		(933,000)
Payment in settlement of retained liability	325,000
Retained liability settled amount	1,500,000							200,000
Current liabilities of discontinued operations			271,000		271,000		1,640,000		200,000	1,700,000	1,700,000
Gain in discontinued operations			$ 1,200,000					$ 200,000