Acquisition - Additional Information (Detail) - USD ($)		12 Months Ended
	Feb. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Business acquisition share price	$ 30.00
Stock-based compensation expense		$ 29,500,000	$ 49,200,000	$ 27,300,000
Electro Scientific Industries Inc [Member]
Business Acquisition [Line Items]
Business acquisition share price	$ 30.00
Business acquisition, total cash consideration	$ 1,032,700,000
Non Cash Consideration related to share based compensation awards	30,600,000
Total Purchase Consideration	$ 1,063,300,000
Fair value write-up of acquired finished goods inventory		7,600,000
Incremental costs of sales charge			7,600,000
Fair value excluding write-up of acquired property, plant and equipment		$ 39,200,000
Compensation expense			2,700,000
Stock-based compensation expense			$ 14,000,000.0