401(k) Plan	12 Months Ended
Dec. 27, 2019
Compensation And Retirement Disclosure [Abstract]
401(k) Plan	12. 401(k) Plan The Company maintains a 401(k) plan covering all eligible employees. Subject to certain dollar limits, eligible employees may contribute up to 15% of their pre-tax annual compensation to the plan. The Company may make discretionary contributions on an annual basis. Effective April 1, 2018, the Company made matching contributions of 40% of employee eligible contributions up to 6% of their gross salaries. During fiscal year 2017, the Company made matching contributions of 25% of employee contributions up to 6% of their gross salaries. The Company’s matching contributions were $0.8 million, $1.1 million and $0.5 million for the fiscal years ended December 27, 2019, December 28, 2018 and December 29, 2017.

401(k) Plan

12 Months Ended

Dec. 27, 2019

Compensation And Retirement Disclosure [Abstract]

12. 401(k) Plan

The Company maintains a 401(k) plan covering all eligible employees. Subject to certain dollar limits, eligible employees may contribute up to 15% of their pre-tax annual compensation to the plan. The Company may make discretionary contributions on an annual basis. Effective April 1, 2018, the Company made matching contributions of 40% of employee eligible contributions up to 6% of their gross salaries. During fiscal year 2017, the Company made matching contributions of 25% of employee contributions up to 6% of their gross salaries. The Company’s matching contributions were $0.8 million, $1.1 million and $0.5 million for the fiscal years ended December 27, 2019, December 28, 2018 and December 29, 2017.