Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 30, 2022	Dec. 31, 2021	Jan. 01, 2021
Allowance For Bad Debt [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		$ 973	$ 879	$ 945
Provision Charged to Expense		455	454	443
Provision Charged to Revenues		0	0	0
Accounts Written-off Net of Recoveries	[1]	(189)	(360)	(509)
Balance at End of Year		1,239	973	879
Allowance For Contract Losses [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		3,450	3,116	3,350
Provision Charged to Expense		0	0	0
Provision Charged to Revenues		2,626	1,505	1,406
Accounts Written-off Net of Recoveries	[1]	(1,122)	(1,171)	(1,640)
Balance at End of Year		$ 4,954	$ 3,450	$ 3,116

[1] Balance includes currency translation adjustments.