Quarterly report pursuant to Section 13 or 15(d)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

v3.19.1
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Noncash stock-based compensation expense
   

Three Months Ended

March 31,

   
    2019   2018    
Stock options   $ 1,292,000     $ 632,000      
Warrants     1,202,000       225,000      
Restricted stock units     151,000       3,000      
Total general and administrative expense   $ 2,730,000     $ 860,000