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Segment Reporting and Geographic Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) segment item	Jun. 30, 2020 USD ($)
Revenue reporting by end-market and geographic region
Number of operating segments \| segment			1
Number of reportable segments \| segment			1
Number of key markets \| item			4
Sales	$ 146,344	$ 98,637	$ 280,059	$ 203,139
United States
Revenue reporting by end-market and geographic region
Sales	66,969	29,632	112,132	69,268
EMEA
Revenue reporting by end-market and geographic region
Sales	8,939	26,130	22,563	42,280
China
Revenue reporting by end-market and geographic region
Sales	20,880	17,393	40,887	27,865
Rest of APAC
Revenue reporting by end-market and geographic region
Sales	49,460	25,432	104,337	63,374
Rest Of World
Revenue reporting by end-market and geographic region
Sales	96	50	140	352
Semiconductor
Revenue reporting by end-market and geographic region
Sales	53,689	37,460	105,321	74,884
Compound Semiconductor
Revenue reporting by end-market and geographic region
Sales	24,231	17,740	48,982	36,169
Data Storage
Revenue reporting by end-market and geographic region
Sales	52,025	28,305	93,005	67,188
Scientific & Other
Revenue reporting by end-market and geographic region
Sales	$ 16,399	$ 15,132	$ 32,751	$ 24,898