Benefit Plans - The Company's Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 70,676	$ 48,123	$ 42,208
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	20,889	17,063
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	46,470	30,656
Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,793
Cash and cash equivalents, and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,525	404
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	5,399	9,292
Level 1 | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,361	1,031
Level 1 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	3,336	8,088
Level 1 | Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0
Level 1 | Cash and cash equivalents, and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	702	173
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 2 | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 2 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 2 | Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0
Level 2 | Cash and cash equivalents, and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	632	0
Level 3 | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Level 3 | Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	632
Level 3 | Cash and cash equivalents, and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
NAV
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	64,645	38,831
NAV | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	19,528	16,032
NAV | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	43,134	22,568
NAV | Insurance contracts and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,161
NAV | Cash and cash equivalents, and other
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 823	$ 231