Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.20.2
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Income Tax Disclosure [Abstract]        
Effective tax rate     7.50% 25.40%
Benefit for income taxes $ 99 $ 732 $ 448 $ 1,825
Pre-provision loss 909 $ 2,690 5,983 $ 7,182
Valuation allowance $ 203   $ 203