Stockholders' Equity (Detail Textuals 2) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Mar. 09, 2015	Apr. 03, 2014	Dec. 31, 2015	Dec. 31, 2014
Equity Offering [Line Items]
Common stock, par value (in dollars per share)			$ 0.001	$ 0.001
Proceed from public offering			$ 9,171	$ 9,289
Common stock
Equity Offering [Line Items]
Number of common shares sold into underwriting agreement (in shares)			10,000,000	2,857,143
Proceed from public offering			$ 10	$ 3
Common stock \| April 2014 Underwriting Agreement
Equity Offering [Line Items]
Number of common shares sold into underwriting agreement (in shares)		2,857,143
Common stock, par value (in dollars per share)		$ 0.001
Share price per share	$ 1.00	$ 3.50
Proceed from public offering		$ 9,300
Common stock \| March 2015 Public Offering
Equity Offering [Line Items]
Number of common shares sold into underwriting agreement (in shares)	10,000,000
Proceed from public offering	$ 9,200