Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended			1 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Apr. 30, 2008 sqft	Jan. 29, 2013 Subsequent Event	Dec. 31, 2012 Alabama Jobs Commitment
Commitments and Contingencies [Line Items]
Additional shares of common stock to stockholders	480,059
Additional maximum amount payable on successful achievement of specified milestones to sellers of PR Pharma	$ 3,000,000
Indemnification period	5 years
Office and warehouse facility			286,000
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