SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Redeemable Convertible Preferred Stock

A roll forward of the balance of redeemable convertible preferred stock for the years ended December 31, 2017 and 2016 follows (in thousands):

Balance at December 31, 2015	$	29,638
Deemed dividend on redeemable convertible preferred stock	2,505
Balance at December 31, 2016	32,143
Deemed dividend on redeemable convertible preferred stock	2,716
Balance at December 31, 2017	$	34,859