STOCKHOLDERS' EQUITY (Details)	Dec. 31, 2016 shares
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	4,386,664
Warrants to purchase common stock
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	695,383
Stock Option Plan
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	3,452,409
Employee Stock Purchase Plan
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	238,872