Debt - Additional Information (Detail) (USD $)			1 Months Ended						1 Months Ended				1 Months Ended		1 Months Ended				1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Oct. 26, 2012 Horizon	Apr. 13, 2011 Horizon	Dec. 31, 2013 Horizon	Dec. 31, 2012 Horizon	Dec. 31, 2013 Horizon Term Loan Credit Facility	Dec. 31, 2012 Horizon Term Loan Credit Facility	Aug. 09, 2013 Neurone	Dec. 31, 2013 Neurone	Dec. 31, 2013 Neurone Term Loan Credit Facility	Aug. 09, 2013 Neurone Term Loan Credit Facility	Nov. 30, 2012 Venture Bank	Dec. 31, 2013 Venture Bank	Nov. 30, 2012 Venture Bank Minimum	Nov. 30, 2012 Venture Bank Term Loan Credit Facility	Dec. 31, 2013 Venture Bank Term Loan Credit Facility	Dec. 31, 2012 Venture Bank Term Loan Credit Facility	Nov. 30, 2012 Venture Bank Revolving Credit Facility	Dec. 31, 2013 Venture Bank Revolving Credit Facility	Dec. 31, 2012 Venture Bank Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit				$ 5,000,000								$ 500,000				$ 2,500,000			$ 2,000,000
Loan interest rate			11.65%	11.75%					8.00%
Loan initial maturity date				Nov. 01, 2014
Loan repayment			5,000,000
Additional borrowings			5,000,000
Loans maturity date			May 01, 2016						Aug. 09, 2014							Nov. 30, 2017			Nov. 30, 2013
Fair value of line of credit					9,200,000	9,300,000				500,000
Line of credit outstanding amount							9,700,000	10,000,000			500,000						2,200,000	2,500,000		0	0
Prime rate													Prime rate plus 2.0%
Prime rate percentage													2.00%		5.50%
Debt instrument fair value																	2,200,000	2,400,000
Current maturities of long-term debt	$ 5,902,000	$ 336,000												$ 2,200,000