DEBT (Tables)

9 Months Ended

Sep. 30, 2018

DEBT

Schedule of maturities of long-term debt

The future annual principal payments due under the 2014 Debt Facility as of September 30, 2018 were as follows (in thousands):

Years Ending December 31,
2018 (remaining three months)	$	—
2019		5,000
2020		6,667
2021		6,667
2022		1,666
Total	$	20,000