Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Allowance For Bad Debt [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		$ 1,239	$ 973	$ 879
Provision Charged to Expense		856	455	454
Provision Charged to Revenues		0	0	0
Accounts Written-off Net of Recoveries	[1]	(933)	(189)	(360)
Balance at End of Year		1,162	1,239	973
Allowance For Contract Losses [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		4,954	3,450	3,116
Provision Charged to Expense		0	0	0
Provision Charged to Revenues		2,368	2,626	1,505
Accounts Written-off Net of Recoveries	[1]	(3,203)	(1,122)	(1,171)
Balance at End of Year		$ 4,119	$ 4,954	$ 3,450

[1] Balance includes currency translation adjustments.