Financial Statement Components - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Inventory write-offs and write-downs		$ 19,547,000	$ 12,154,000	$ 2,918,000
Depreciation and amortization		22,300,000	4,300,000	3,900,000
Restructuring and related cost, accelerated depreciation		9,200,000
Amortization expense		4,323,000	2,237,000
Estimated contract losses		16,400,000	$ 19,200,000	$ 0
IPR&D
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 3,000,000
Freedom Photonics
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 12,500,000	12,500,000
Freedom Photonics | ATS
Finite-Lived Intangible Assets [Line Items]
Impairment charges		12,500,000
Freedom Photonics | Autonomy Solutions
Finite-Lived Intangible Assets [Line Items]
Impairment charges		0
Freedom Photonics | IPR&D
Finite-Lived Intangible Assets [Line Items]
Impairment charges		$ 3,000,000