XML 71 R57.htm IDEA: XBRL DOCUMENT v3.6.0.2
STOCKHOLDERS' EQUITY - COMMON STOCK RESERVED FOR FUTURE ISSUANCE (Details) - shares
Dec. 31, 2016
Dec. 31, 2015
STOCKHOLDERS' EQUITY    
Outstanding stock options (in shares) 19,125,287 17,205,683
Options and awards available for grant (in shares) 9,570,535 12,054,916
Warrant outstanding (in shares) 537,893  
Common stock reserved for future issuance (in shares) 30,148,830  
Employee stock purchase plan    
STOCKHOLDERS' EQUITY    
Common stock reserved for future issuance (in shares) 915,115