Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Restructuring and other—employee severance	$ 21,277	$ 17,185	$ 9,312
Other (income) expense, net - gain on foreign exchange option	(10,900)	(10,800)	2,100
Restructuring and other—gain on sale of asset	0	3,410	0
Other (income) expense, net—loss on convertible debt conversion	962	5,786	(24,572)
Restructuring and other - AutoGuide contingent consideration adjustment	0	0	(7,227)
Mobile Industrial Robots (MiR)
Segment Reporting Information [Line Items]
Restructuring and other - AutoGuide contingent consideration adjustment			7,200
Semiconductor Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	22,482	21,456	6,661
Restructuring and other—employee severance	5,666	0	0
Restructuring and other - acquisition & divestiture related expenses			500
Restructuring and other—environmental and legal liabilities			2,500
System Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	1,855	1,730	641
Restructuring and other—employee severance	1,541	0	0
Robotics
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	2,275	3,668	6,403
Restructuring and other—employee severance	3,707	2,115	1,210
Restructuring and other - acquisition & divestiture related expenses	0	0	1,000
Wireless Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	1,746	4,598	1,770
Corporate And Eliminations
Segment Reporting Information [Line Items]
Selling and administrative—equity modification charge	5,889	0	0
Restructuring and other—employee severance	3,599	0	0
Restructuring and other - acquisition & divestiture related expenses	3,562	0	(513)
Restructuring and other-contract termination	1,511	0	0
Restructuring and other—environmental and legal liabilities	1,100	2,700	1,971
Other (income) expense, net - gain on foreign exchange option	(7,464)	0	0
Restructuring and other—legal settlement charge	0	14,700	12,000
Restructuring and other—gain on sale of asset	0	(3,410)	0
Other (income) expense, net—loss on convertible debt conversion	0	0	28,828
Restructuring and other - AutoGuide contingent consideration adjustment	$ 0	$ 0	$ (7,227)