v3.21.1
Fair Value Measurements - Carrying amount and estimated fair value of senior notes and junior subordinated debentures (Details) - Hman Group holdings Inc and subsidiaries - USD ($)
$ in Thousands
Mar. 27, 2021
Dec. 26, 2020
Dec. 28, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gross $ 1,594,934 $ 1,549,792 $ 1,601,632
6.375% Senior Notes, due 2022      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gross 330,000 330,000  
Estimated Fair Value 330,413 327,525  
11.6% Junior Subordinated Debentures - Preferred      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gross 105,443 105,443  
Estimated Fair Value $ 113,344 $ 128,022