Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 26, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Investment Assets	$ 2,625	$ 3,391
Foreign Currency Forward Contract	2,220	188
Precious Metal Swaps	0	35
Copper Swaps	137	61
Total Financial Assets	4,982	3,675
Deferred Compensation Investment Related Liability	2,625	3,391
Foreign Currency Forward Contract	523	211
Precious Metal Swaps	1,013	623
Copper Swaps	3	28
Total Financial Liabilities	4,164	4,253
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Investment Assets	2,625	3,391
Foreign Currency Forward Contract	0	0
Precious Metal Swaps	0	0
Copper Swaps	0	0
Total Financial Assets	2,625	3,391
Deferred Compensation Investment Related Liability	2,625	3,391
Foreign Currency Forward Contract	0	0
Precious Metal Swaps	0	0
Copper Swaps	0	0
Total Financial Liabilities	2,625	3,391
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Investment Assets	0	0
Foreign Currency Forward Contract	2,220	188
Precious Metal Swaps	0	35
Copper Swaps	137	61
Total Financial Assets	2,357	284
Deferred Compensation Investment Related Liability	0	0
Foreign Currency Forward Contract	523	211
Precious Metal Swaps	1,013	623
Copper Swaps	3	28
Total Financial Liabilities	1,539	862
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Investment Assets	0	0
Foreign Currency Forward Contract	0	0
Precious Metal Swaps	0	0
Copper Swaps	0	0
Total Financial Assets	0	0
Deferred Compensation Investment Related Liability	0	0
Foreign Currency Forward Contract	0	0
Precious Metal Swaps	0	0
Copper Swaps	0	0
Total Financial Liabilities	$ 0	$ 0