Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Textual)

Organization and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Less change in fair value of warrant liability	$ 2	$ (5)	$ 614	$ (111)
Investments, Fair Value Disclosure	$ 11,700		$ 11,700

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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