XML 43 R32.htm IDEA: XBRL DOCUMENT v3.5.0.2
Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 14 Months Ended
Aug. 31, 2016
$ / shares
shares
Mar. 31, 2016
USD ($)
$ / shares
shares
Feb. 28, 2015
USD ($)
Apr. 30, 2013
USD ($)
Dec. 31, 2011
$ / shares
shares
Sep. 30, 2016
USD ($)
Employees
$ / shares
shares
Jun. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Employees
Segment
$ / shares
shares
Sep. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
shares
Dec. 31, 2013
shares
Dec. 31, 2012
shares
Dec. 31, 2011
$ / shares
shares
Aug. 31, 2014
USD ($)
Aug. 15, 2016
May 06, 2016
shares
May 05, 2016
shares
Dec. 31, 2015
USD ($)
shares
Apr. 30, 2015
$ / shares
Class of Warrant or Right [Line Items]                                      
Number of segments | Segment               1                      
Number of employees eliminated | Employees               50                      
Wind-down expense | $           $ 2,694   $ 3,806,142                      
Accumulated deficit | $           (467,980,451)   (467,980,451)                   $ (456,686,634)  
Cash and cash equivalents | $           $ 2,078,618   $ 2,078,618 $ 21,185,263 $ 24,987,603               $ 12,110,565  
Number of existing employees after wind down of operations | Employees           4   4                      
Common stock, shares authorized           200,000,000 [1]   200,000,000 [1]               200,000,000 225,000,000 200,000,000 [1]  
Stockholders ownership after proposed merger                             5.00%        
Minimum cash position required for completion of merger | $           $ 0   $ 0                      
Maturity period for market accounts, money market funds and investments               90 days                      
Fair value of warrant liability | $           651,902 $ 770,964 $ 651,902                   $ 770,964  
Proceeds from issuance of stock units | $               7,259,613 $ 24,942,963                    
Value of patent | $               0                      
Other Income | $             8,917,000                        
Gain on extinguishment of a loan | $             243,000                        
Accumulated other comprehensive income | $           47,386   47,386                   $ 47,359  
Microbot Medical Ltd [Member]                                      
Class of Warrant or Right [Line Items]                                      
Stockholders ownership after proposed merger                             95.00%        
CIRM [Member]                                      
Class of Warrant or Right [Line Items]                                      
Approval of fund by California Institute for Regenerative Medicine (CIRM) | $       $ 19,300,000                              
Aggregate proceeds from disbursement of the loan | $                           $ 9,600,000          
Forgiveness of loan principal | $     $ 8,917,000                                
Accrued interest forgiven | $     243,000                                
Repayment of aggregate loan proceeds received | $     $ 679,000                                
Other Income | $             8,917,000                        
Gain on extinguishment of a loan | $             243,000                        
Series A Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares $ 0.30 $ 3.60                                  
Number of securities callable by each warrant or right warrants   0.50                                  
Number of warrants exercised 1,187,190                                    
Number of additional warrants issued   166,473                                  
Number of warrants outstanding 1,277,609                                    
Fair value of warrant liability | $           115,000   115,000                      
Warrant expiration period   2 years                                  
Series A Warrants [Member] | Common Stock [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares                                     $ 8.40
Series B Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Term of warrant   5 years                                  
Exercise price of warrants | $ / shares $ 0.30 $ 5.04                                  
Number of securities callable by each warrant or right warrants   0.75                                  
Number of additional warrants issued   249,709                                  
Number of warrants outstanding 1,916,407                                    
Fair value of warrant liability | $           482,000   482,000                      
Warrant expiration period   1 year                                  
Number of warrants surrendered 1,546,360                                    
2011 Series A Warrant [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares $ 0.30                                    
Number of warrants exercised 531,814                                    
Number of shares issued upon warrants exercise 531,814                                    
Number of warrants outstanding 578,081                                    
Fair value of warrant liability | $           $ 55,000   $ 55,000                      
2016 Series A Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares $ 0.30                                    
Number of warrants exercised 1,187,190                                    
Number of shares issued upon warrants exercise 1,187,190                                    
Reduced exercise price of Series A Warrants in exchange for surrender of Series B Warrants | $ / shares $ 0.30                                    
Number of warrants outstanding 1,277,609                                    
2016 Series B Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares $ 0.30                                    
Number of warrants outstanding 1,916,407                                    
Number of warrants surrendered 1,546,360                                    
December 2011 Financing [Member] | Common Stock [Member]                                      
Class of Warrant or Right [Line Items]                                      
Number of securities callable by each warrant or right warrants         1 1   1         1            
Number of shares issued upon warrants exercise                       225,000              
December 2011 Financing [Member] | Series A Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Term of warrant         5 years                            
Number of securities callable by warrants         666,667               666,667            
Number of securities callable by each warrant or right warrants           1   1                      
Number of warrants exercised                   98,335 32,045 183,215              
Number of additional warrants issued                       225,000              
Fair value of warrant liability | $           $ 54,945 $ 770,964 $ 54,945                      
December 2011 Financing [Member] | Series A Warrants [Member] | Common Stock [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares         $ 16.80               $ 16.80            
Number of shares issued upon warrants exercise                   98,335 32,045 183,215              
December 2011 Financing [Member] | Series B Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Term of warrant         90 days               90 days            
Number of securities callable by warrants         666,667               666,667            
Exercise price of warrants | $ / shares         $ 15.00               $ 15.00            
Number of warrants exercised                       225,000              
Number of warrants expired               441,667       441,667              
April 2015 Financing [Member] | Series A Warrants [Member] | Common Stock [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares   $ 6.24       $ 6.24   $ 6.24                     $ 8.40
March 2016 Financing [Member] | Series A Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Fair value of warrant liability | $           $ 114,918   $ 114,918                      
March 2016 Financing [Member] | Series A Warrants [Member] | Common Stock [Member]                                      
Class of Warrant or Right [Line Items]                                      
Exercise price of warrants | $ / shares   $ 3.60       $ 3.60   $ 3.60                      
March 2016 Financing [Member] | Series B Warrants [Member]                                      
Class of Warrant or Right [Line Items]                                      
Fair value of warrant liability | $           $ 482,039   $ 482,039                      
Underwritten Public Offering [Member]                                      
Class of Warrant or Right [Line Items]                                      
Number of shares issued upon warrants exercise   2,222,250                                  
Proceeds from issuance of stock units | $   $ 8,000,000                                  
Number of stock units issued, price per share | $ / shares   $ 3.60                                  
Over-Allotment-Option [Member]                                      
Class of Warrant or Right [Line Items]                                      
Number of securities callable by each warrant or right warrants   416,672                                  
Number of shares issued upon warrants exercise   333,338                                  
Underwriting option exercise period   45 days                                  
[1] Adjusted for the 1-for-12 reverse stock split as discussed in Note 1.