Income Taxes (Detail Textuals) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013 Federal Research and development credit carryforwards	Dec. 31, 2013 State Research and development credit carryforwards
Operating Loss Carryforwards [Line Items]
Income tax expense	$ 1,599,000	$ 355,000	$ 2,625,000	$ 1,603,000
Income tax U.S. statutory rate	34.00%	34.00%	34.00%	34.00%
Tax benefits from stock-based awards			1,500,000
Deferred tax assets	900,000		900,000
Net federal and state research and development credit carryforwards					4,900,000	700,000
Equity adjustment to additional paid-in capital			$ 1,500,000