Retirement Plan	12 Months Ended
Dec. 31, 2018
Retirement Benefits [Abstract]
Retirement Plan	12. Retirement Plan The Company has established a defined-contribution plan under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”). The 401(k) Plan covers all employees who meet defined minimum age and service requirements, and allows participants to defer a portion of their annual compensation on a pre-tax basis. As currently established, the Company is not required to make any contributions to the 401(k) Plan. The Company contributed $0.4 million and $0.2 million during the years ended December 31, 2018 and 2017, respectively.

Retirement Plan

12 Months Ended

Dec. 31, 2018

12. Retirement Plan

The Company has established a defined-contribution plan under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”). The 401(k) Plan covers all employees who meet defined minimum age and service requirements, and allows participants to defer a portion of their annual compensation on a pre-tax basis. As currently established, the Company is not required to make any contributions to the 401(k) Plan. The Company contributed $0.4 million and $0.2 million during the years ended December 31, 2018 and 2017, respectively.