Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
U.S. federal income tax rate	34.00%
Valuation allowances	$ 5,880	$ 4,121
Federal net operating loss carry-forwards, gross	3,997	3,042
State net operating loss carry-forwards, gross	160	531
Federal tax credit	110
Net operating loss carry-forwards term	P3Y
New Jersey State [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance operating losses, net	8,890
Unused research and development tax credits	15
Proceeds, net of commissions	750
Valuation allowances	5,900	4,100
Federal net operating loss carry-forwards, gross	11,800	9,100
State net operating loss carry-forwards, gross	$ 2,700	$ 8,900
Federal and state net operating loss carry-forwards, Expiration date	Dec. 31, 2027
Federal research and development credits, Expiration date	Dec. 31, 2033