Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying amount of goodwill and accumulated impairment loss during the three months ended March 31, 2022 and twelve months ended December 31, 2021 were as follows:

	Three Months Ended March 31, 2022									Twelve Months Ended December 31, 2021
	Gross Carrying Amount			Accumulated Impairment Loss			Net			Gross Carrying Amount			Accumulated Impairment Loss			Net
Beginning balance at January 1	$	1,373		$	(145	)	$	1,228		$	1,211		$	(145	)	$	1,066
Acquired goodwill(1)		—			—			—			168			—			168
Foreign currency translation		(1	)		—			(1	)		(6	)		—			(6	)
Ending balance	$	1,372		$	(145	)	$	1,227		$	1,373		$	(145	)	$	1,228

(1)During the twelve months ended December 31, 2021, the Company recorded goodwill related to the acquisition of Photon Control Inc. ("Photon Control").

Intangible Assets

Intangible Assets

Components of the Company's intangible assets are comprised of the following:

As of March 31, 2022:	Gross		Accumulated Impairment Charges			Accumulated Amortization			Foreign Currency Translation			Net
Completed technology	$	556	$	—		$	(251	)	$	—		$	305
Customer relationships		318		(2	)		(128	)		(1	)		187
Patents, trademarks, trade names and other		123		—			(54	)		—			69
	$	997	$	(2	)	$	(433	)	$	(1	)	$	561

As of December 31, 2021:	Gross		Accumulated Impairment Charges			Accumulated Amortization			Foreign Currency Translation			Net
Completed technology(1)	$	556	$	—		$	(242	)	$	—		$	314
Customer relationships(1)		318		(2	)		(124	)		—			192
Patents, trademarks, trade names and other(1)		123		—			(52	)		(1	)		70
	$	997	$	(2	)	$	(418	)	$	(1	)	$	576

(1)During the twelve months ended December 31, 2021, the Company recorded $121 of separately identified intangible assets related to its acquisition of Photon Control, representing $110 in completed technology, $9 in customer relationships and $2 in patents, trademarks, trade names and other.

Estimated Net Amortization Expense

Aggregate net amortization expense related to acquired intangible assets for future years is as follows:

Year	Amount
2022 (remaining)	$	45
2023		58
2024		57
2025		56
2026		53
2027		52
Thereafter		184