Accrued Expenses (Details) - Accrued expenses (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accrued expenses [Abstract]
Payroll and related costs	$ 1,672,891	$ 1,861,066
Business development	697,049	306,764
Professional fees	470,423	463,603
Advertising	401,301	121,182
Tax related	206,508	164,964
Restructuring and other charges (see note 14)	96,273	1,838,904
Other liabilities	793,978	1,164,669
Total accrued expenses	$ 4,338,423	$ 5,921,152