Defined Contribution Plan	12 Months Ended
Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
DEFINED CONTRIBUTION PLAN	15. DEFINED CONTRIBUTION PLAN The Company has a 401(k) defined contribution plan (the “401(k) Plan”) for all of its employees. Eligible employees may make pretax contributions to the 401(k) Plan up to statutory limits, while the Company contributes to the plan at the discretion of the Board of Directors. The Company’s discretionary match made under the 401(k) Plan for the year ended December 31, 2018 was $0.3 million. There was no discretionary match made under the 401(k) Plan for the year ended December 31, 2017.

Defined Contribution Plan

12 Months Ended

Dec. 31, 2018

Compensation And Retirement Disclosure [Abstract]

15. DEFINED CONTRIBUTION PLAN

The Company has a 401(k) defined contribution plan (the “401(k) Plan”) for all of its employees. Eligible employees may make pretax contributions to the 401(k) Plan up to statutory limits, while the Company contributes to the plan at the discretion of the Board of Directors. The Company’s discretionary match made under the 401(k) Plan for the year ended December 31, 2018 was $0.3 million. There was no discretionary match made under the 401(k) Plan for the year ended December 31, 2017.