Debt - Narrative (Details) - USD ($)	May 31, 2018	Oct. 01, 2022	Jan. 01, 2022
Debt Instrument [Line Items]
Long-term debt obligations		$ 200,800,000	$ 177,800,000
Deferred debt issuance costs, current		300,000
Deferred debt issuance costs, noncurrent		$ 1,200,000
Maximum ratio of interest coverage to earnings for the last four fiscal quarters		4.0
Maximum ratio of leverage to earnings for the last four fiscal quarters		3.5
Revolving credit facility with interest at a variable rate (October 1, 2022 - 4.2%; January 1, 2022 - 1.1%)
Debt Instrument [Line Items]
Long-term line of credit outstanding		$ 100,000,000
Line of credit maximum borrowing capacity		400,000,000
Line of credit remaining borrowing capacity		300,000,000
Notes Payable to Banks
Debt Instrument [Line Items]
Long-term debt obligations		100,000,000
Private Placement
Debt Instrument [Line Items]
Fair value of debt obligations		97,000,000
Deferred debt issuance costs, noncurrent		300,000
Borrowings		$ 100,000,000
Fixed-rate notes due in 2025 with an interest rate of 4.22%
Debt Instrument [Line Items]
Borrowings	$ 50,000,000
Note term	7 years
Interest rate	4.22%	4.22%
Fixed-rate notes due in 2028 with an interest rate of 4.40%
Debt Instrument [Line Items]
Borrowings	$ 50,000,000
Note term	10 years
Interest rate	4.40%	4.40%