Other Long-Term Liabilities (Details) (USD $)	1 Months Ended			9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Other Long-Term Liabilities
Deferred Rent				$ 404,000		$ 434,000
Net Deferred Tax Liability related to IPR&D				4,661,000		4,661,000
Deferred Income from Sale of Tax Benefits				1,630,000		1,118,000
Deferred Revenue				1,237,000
Loan Payable				428,000		472,000
Other				61,000		39,000
Total				8,421,000		6,724,000
Less Current Portion				(1,006,000)		(388,000)
Long-Term Portion				7,415,000		6,336,000
Amount at which New Jersey tax benefit agreed to be sold	800,000	800,000	600,000
Amount of sale of New Jersey tax benefit	800,000	700,000	500,000
Period for which base of operations must be maintained				5 years
Other income related to sale of tax benefits				$ 200,000	$ 100,000