General form of registration statement for all companies including face-amount certificate companies

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.8.0.1
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 10, 2017
Jan. 25, 2016
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Jul. 28, 2017
Dec. 31, 2014
Net loss     $ 2,069 $ 5,187 $ 4,284 $ 13,639 $ 14,763 $ 23,912    
Net cash used in operating activities         4,396 5,257 7,170 9,063    
Accumulated deficit     215,323   $ 215,323   $ 211,300 196,537    
Debt instrument, payment terms         As discussed further in Note 7, in June 2014 the Company entered into a term loan with Hercules Technology Growth Capital, Inc. (“Hercules Technology”), as administrative and collateral agent for the lenders thereunder and as lender, and Hercules Technology III, LP, (“HT III” and, together with Hercules Technology, “Hercules”) as lender (the “Hercules Term Loan”). The Hercules Term Loan has a liquidity covenant that requires the Company to maintain a cash balance of the lesser of $2.5 million or the outstanding balance of the Hercules Term Loan. As of September 30, 2017, the outstanding balance on the Hercules Term Loan was $2.3 million and the Company’s cash balance was $2.8 million. The Company believes it will be in position to maintain compliance with the liquidity covenant related to the Hercules Term Loan at least through November 2017. On July 28, 2017, the Company entered into a $2.5 million term loan with a related party that will assist the Company in its cash needs through November 2017.   As discussed further in Note 7, in June 2014, the Company entered into a term loan with Hercules Technology Growth Capital, Inc. (“Hercules Technology”), as administrative and collateral agent for the lenders thereunder and as lender, and Hercules Technology III, LP, (“HT III” and, together with Hercules Technology, “Hercules”) as lender (the “Hercules Term Loan”). The Hercules Term Loan has a liquidity covenant that requires the Company to maintain a cash balance of not less than $3.0 million at December 31, 2016.      
Term loan principal balance                 $ 2,500  
Cash and cash equivalents     2,816 $ 10,613 $ 2,816 $ 10,613 $ 6,915 $ 11,485   $ 18,247
Reverse stock split 1 for 12 reverse stock split 1 for 15 reverse stock split                
November 10, 2017 [Member]                    
Reverse stock split         1 for 12 reverse stock          
Hercules Term Loan [Member]                    
Term loan principal balance     2,300   $ 2,300          
Hercules Term Loan [Member] | Maximum [Member]                    
Term loan principal balance     $ 2,500   $ 2,500