Discontinued Operations - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended			1 Months Ended
	Nov. 17, 2011	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2012	Jan. 29, 2013 Subsequent Event	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
Indemnification period of specified losses		5 years
Loss on sale of discontinued operations, before income taxes			(1,661,000)
Loss on sale of discontinued operations, net of income taxes			(1,054,000)
Current liabilities of discontinued operations		1,640,000		1,640,000		1,700,000
Payment in settlement of retained liability					325,000
Retained liability settled amount					1,500,000
Gain from discontinued operation before taxes expected to be recognized in the second quarter of 2013					$ 1,200,000