Stockholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended
	Feb. 02, 2017	Sep. 06, 2016	Aug. 29, 2016	Dec. 15, 2015	Sep. 16, 2015	Jul. 23, 2012	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 08, 2011
Preferred stock, shares authorized							5,000,000		5,000,000
Preferred stock par value							$ 0.01		$ 0.01
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, shares authorized							350,000,000		350,000,000
Common stock,restrictions usage										75,000,000
Common stock, increase authorized										150,000,000
Common stock,unrestrictions usage					67,000,000
Reverse stock split description			12 to 1 reverse stock split on the outstanding shares
Maximum number of shares issued upon transaction, value							$ 875
Proceeds from sale of common stock, net of issuance costs							875	$ 2
Placement Agent [Member]
Proceeds from foregoing transaction							$ 4,520
Equity Distribution Agreement [Member] | Maxim Group LLC [Member]
Maximum number of shares issued upon transaction, value						$ 75,000
Proceeds from sale of equity						$ 10,000
Percentage of fixed commissions aggregate gross proceeds up to $10,000,000						4.00%
Percentage of fixed commissions aggregate gross proceeds after $10,000,000						3.00%
Equity Distribution Agreement [Member] | Chardan Capital Markets, LLC [Member]
Percentage of fixed commissions aggregate gross proceeds				3.00%
Prospectus Supplement New Equity Distribution Agreement [Member] | Maxim Group LLC [Member]
Maximum number of shares issued upon transaction, value				$ 0
February Purchase Agreement [Member] | Investors [Member]
Maximum number of shares issued upon transaction	1,818,185
Percentage of fixed commissions aggregate gross proceeds							7.00%
Shares issued price per share	$ 0.55
February Purchase Agreement [Member] | Investors [Member] | Warrant [Member]
Proceeds from sale of common stock, net of issuance costs	$ 875
Percentage of fixed commissions aggregate gross proceeds							5.00%
Shares issued price per share							$ 0.6875
Number of warrant to purchase shares of common stock	1,363,639
Warrant exercise price per share	$ 0.75
Warrant initially exercisable term	6 months
Warrant exercisable term	5 years
Warrant outstanding							90,910
Warrant expiry date							Feb. 01, 2022
Securities Purchase Agreement [Member] | Investors [Member]
Maximum number of shares issued upon transaction		3,333,334
Shares issued price per share		$ 1.50
Securities Purchase Agreement [Member] | Investors [Member] | Warrant [Member]
Proceeds from sale of common stock, net of issuance costs		$ 4,520
Number of warrant to purchase shares of common stock		2,500,000
Warrant exercise price per share		$ 2.00
Warrant initially exercisable term		6 months
Warrant exercisable term		5 years
Engagement Agreement [Member] | Placement Agent [Member]
Percentage of fixed commissions aggregate gross proceeds							7.00%
Engagement Agreement [Member] | Placement Agent [Member] | Warrant [Member]
Percentage of fixed commissions aggregate gross proceeds							5.00%
Shares issued price per share							$ 1.875
Warrant outstanding							166,667
Warrant expiry date							Sep. 01, 2021
Equity Incentive Plans 2009 [Member]
Maximum number of shares issued upon transaction					60,000,000
Number of additional authorized shares under plan					7,000,000
Reverse stock split description							12 to 1 reverse stock split
Maximum number of common stock reserved							22,000,000
Expiration period							10 years
Minimum [Member]
Common stock, shares authorized							200,000,000
Maximum [Member]
Common stock, shares authorized							350,000,000