Shareholders’ Equity (Details Textual) (USD $)	0 Months Ended		12 Months Ended		0 Months Ended	1 Months Ended
	Jan. 14, 2014	Sep. 24, 2013	Dec. 31, 2014	Dec. 31, 2013	Jul. 23, 2014	Jul. 31, 2014	Aug. 27, 2014	Aug. 26, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized			100,000,000	12,000,000,000			100,000,000	12,000,000,000
Reverse stock split ratio	0.02
Preferred Stock
Preferred stock, shares authorized			8,000,000
Preferred stock, par value			0.0001
Series C-1 Convertible Preferred Stock [Member]
Preferred Stock
Preferred stock, shares authorized			11,000	11,000
Shares issued upon conversion			1,724
Preferred stock, shares issued			3,917	7,016
Shares reserved for future issuance			6,752,908
Liquidation preference per share			1,000
Liquidation preference			3,917,000
Preferred stock, liquidation preference			3,917,000	7,016,000
Conversion of stock, shares issued		557
Series F Convertible Preferred Stock [Member]
Preferred Stock
Preferred stock, shares authorized			10,000	10,000
Shares issued upon conversion			286
Preferred stock, shares issued			2,798	3,250
Shares reserved for future issuance			800,228
Liquidation preference per share			1,000
Liquidation preference			2,798,000
Preferred stock, liquidation preference			2,798,000	3,250,000
Series C-2 Convertible Preferred Stock [Member]
Preferred Stock
Cumulative dividends payable			15.00%
Conversion of stock, shares converted		557
Common Stock [Member]
Preferred Stock
Stock issued during period			5,395,000	1,929,000
Common Stock [Member] | Series C-1 Convertible Preferred Stock [Member]
Preferred Stock
Stock issued during period			5,341,670
Common Stock [Member] | Series F Convertible Preferred Stock [Member]
Preferred Stock
Stock issued during period			129,105
Underwriting Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares agreed to be issued and sold					4,800,000
Proceeds on sale of shares					56,600,000
Optional term to purchase additional shares					30 days
Net proceeds on transaction					53,100,000	53,100,000
Underwriting commissions, discounts and other issuance costs					3,500,000
Over-Allotment Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares agreed to be issued and sold					595,000
Number of additional shares					720,000
IPO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share					$ 10.50
Private Placement [Member]
Preferred Stock
Securities purchase agreement, consideration received, net of commissions		10,000,000
Private placement commission cost		300,000
Private Placement [Member] | Series F Convertible Preferred Stock [Member]
Preferred Stock
Securities purchase agreement, number of shares issued		3,250
Securities purchase agreement, price per share		1,000
Private Placement [Member] | Common Stock [Member]
Preferred Stock
Securities purchase agreement, consideration received		10,000,000
Securities purchase agreement, number of shares issued		1,928,620
Securities purchase agreement, price per share		3.50