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Financial Statement Components - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Inventory write-downs	$ 16,903		$ 5,451
Depreciation and amortization	7,100		1,900
Restructuring and related cost, accelerated depreciation	2,100
Amortization expense	1,000		1,100	$ 4,323
Estimated contract losses	2,300		$ 3,300
IPR&D
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 3,000
Freedom Photonics
Finite-Lived Intangible Assets [Line Items]
Impairment charges		$ 12,500		12,500
Freedom Photonics \| ATS
Finite-Lived Intangible Assets [Line Items]
Impairment charges				12,500
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