Benefit Plans - The Company's Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Dec. 26, 2020
Defined Benefit Plan Disclosure
Total pension plan assets	$ 48,325	$ 100,478
Insurance contracts and other
Defined Benefit Plan Disclosure
Total pension plan assets	2,260	2,565
Cash and cash equivalents
Defined Benefit Plan Disclosure
Total pension plan assets	5,016	4,522
Equity securities
Defined Benefit Plan Disclosure
Total pension plan assets	9,163	8,623
Fixed income
Defined Benefit Plan Disclosure
Total pension plan assets	31,886	31,675
Bulk annuity contract
Defined Benefit Plan Disclosure
Total pension plan assets		53,093
Level 1
Defined Benefit Plan Disclosure
Total pension plan assets	8,942	8,537
Level 1 | Insurance contracts and other
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure
Total pension plan assets	384	654
Level 1 | Equity securities
Defined Benefit Plan Disclosure
Total pension plan assets	2,559	1,719
Level 1 | Fixed income
Defined Benefit Plan Disclosure
Total pension plan assets	5,999	6,164
Level 1 | Bulk annuity contract
Defined Benefit Plan Disclosure
Total pension plan assets
Level 2
Defined Benefit Plan Disclosure
Total pension plan assets	33,433	32,085
Level 2 | Insurance contracts and other
Defined Benefit Plan Disclosure
Total pension plan assets	1,917	1,880
Level 2 | Cash and cash equivalents
Defined Benefit Plan Disclosure
Total pension plan assets	4,632	3,868
Level 2 | Equity securities
Defined Benefit Plan Disclosure
Total pension plan assets	6,604	6,904
Level 2 | Fixed income
Defined Benefit Plan Disclosure
Total pension plan assets	20,280	19,433
Level 2 | Bulk annuity contract
Defined Benefit Plan Disclosure
Total pension plan assets
Level 3
Defined Benefit Plan Disclosure
Total pension plan assets	343	53,778
Level 3 | Insurance contracts and other
Defined Benefit Plan Disclosure
Total pension plan assets	343	685
Level 3 | Cash and cash equivalents
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
Level 3 | Equity securities
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
Level 3 | Fixed income
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
Level 3 | Bulk annuity contract
Defined Benefit Plan Disclosure
Total pension plan assets		53,093
NAV
Defined Benefit Plan Disclosure
Total pension plan assets	5,607	6,078
NAV | Insurance contracts and other
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
NAV | Cash and cash equivalents
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
NAV | Equity securities
Defined Benefit Plan Disclosure
Total pension plan assets	0	0
NAV | Fixed income
Defined Benefit Plan Disclosure
Total pension plan assets	$ 5,607	6,078
NAV | Bulk annuity contract
Defined Benefit Plan Disclosure
Total pension plan assets