Quarterly report pursuant to Section 13 or 15(d)

Debt - Fair Value of Debt (Details)

v3.19.3
Debt - Fair Value of Debt (Details) - USD ($)
$ in Thousands
Sep. 26, 2019
Dec. 27, 2018
Debt Instrument [Line Items]    
Total debt at par value $ 146,375 $ 149,000
Less: unamortized discount and debt issuance costs 3,087 3,666
Net carrying amount 143,288 145,334
Level 3    
Debt Instrument [Line Items]    
Fair value $ 145,643 $ 147,883