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Credit Facility (Narrative) (Details) - Revolving line of credit facility [Member]
9 Months Ended
Oct. 01, 2021
USD ($)
Line of Credit Facility [Line Items]  
Borrowing capacity under credit facility $ 45,000,000.0
Maturity date Nov. 30, 2022
Pledge of capital stock to U.S. subsidiaries 100.00%
Pledge of capital stock to direct foreign subsidiaries 66.00%
Outstanding balance $ 0
Commitment fees percentage 0.125%
London Interbank Offered Rate (LIBOR) [Member]  
Line of Credit Facility [Line Items]  
Margin percentage base rate 1.50%
Base Rate [Member]  
Line of Credit Facility [Line Items]  
Margin percentage base rate 0.75%