Deferred Revenue and Customer Advances (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Apr. 02, 2023	Dec. 31, 2022
Deferred Revenue Arrangement [Line Items]
Maintenance, service and training	$ 61,404	$ 66,458
Customer advances, undelivered elements and other	39,189	35,731
Extended warranty	34,509	34,897	$ 49,343	$ 56,180
Total deferred revenue and customer advances	$ 135,102	$ 137,086