Long Term Debt - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended	3 Months Ended						3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Warrants [Member]	Apr. 30, 2014 Subsequent Event [Member]	Mar. 31, 2014 2013 [Member]	Mar. 31, 2014 2014 [Member]	Mar. 31, 2014 2015 [Member]	Mar. 31, 2014 2016 [Member]	Mar. 31, 2014 2017 [Member]	Mar. 31, 2014 Facility Agreement [Member]	Mar. 31, 2014 Facility Agreement [Member] December 2014 [Member]	Mar. 31, 2014 Facility Agreement [Member] December 2015 [Member]	Mar. 31, 2014 Facility Agreement [Member] December 2016 [Member]	Mar. 31, 2014 Facility Agreement [Member] December 2017 [Member]	Dec. 31, 2011 Deerfield Agreement [Member]	Apr. 30, 2014 Revenue Purchase Agreement [Member] Subsequent Event [Member]
Financing Arrangements [Line Items]
Amount provided in funding to company															$ 15,000,000
Repayment of debt											3,750,000	3,750,000	7,500,000
Long term debt maturities repayment terms											December 2014	December 2015	December 2016
Extended final repayment of debt													3,750,000	3,750,000
Interest on facility agreement										5.75%
Percentage of revenue under condition one	4.25%
Percentage of revenue under condition two due in year one and two					2.75%	2.75%
Percentage of revenue under condition three due in year three and four							2.25%	2.25%	2.25%
Percentage of revenue under condition four	1.00%
Amount of revenue under condition one	25 and Less
Amount of revenue under condition two	25 to 50
Amount of revenue under condition three	50 and Above
Number of common stock shares issued			550,000	450,000
Exercise price of warrants			3.50
Payment for termination of agreement																4,100,000
Aggregate purchase price of warrants				$ 1,575,000
Common stock issued	13,958,183	11,084,119		450,000
Cancellation of warrants to purchase number of additional shares of common stock	100,000