Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Estimated Useful Lives of Property, Plant and Equipment

Estimated useful lives are as follows:


Buildings			25-33 years
Tooling and equipment			2-7 years
Computer equipment			3-5 years
Software			3-7 years
Furniture and fixtures			5-8 years
Leasehold and building improvements			Lesser of lease term or useful life (approximately 2 to 10 years)

Property, plant, and equipment, net were as follows:


	December 31,
(In thousands)	2023		2022
Buildings	$	17,806	$	18,291
Computer equipment	9,679		9,344
Furniture and fixtures	3,598		3,529
Leasehold and building improvements	33,049		39,761
Machinery and equipment	82,302		96,947
Software	28,074		23,607
Tooling	30,724		31,898
	205,232		223,377
Accumulated depreciation	(163,301)		(170,474)
	41,931		52,903
Construction in progress	2,688		9,888
Total property, plant, and equipment, net	$	44,619	$	62,791

Construction in progress was as follows:


	December 31,
(In thousands)	2023		2022
Leasehold and building improvements	$	623	$	475
Machinery and equipment	738		2,282
Software	11		4,862
Tooling	1,197		1,827
Other	119		442
Total construction in progress	$	2,688	$	9,888

Schedule of Finite-Lived Intangible Assets

Estimated useful lives are as follows:


Capitalized software development			2 years
Customer relationships			10-15 years
Developed and core technology			5-15 years
Distribution rights			10 years
Patents			10 years
Trademarks and trade names			10 years

The components of intangible assets, net were as follows:


	December 31,
	2023						2022
(In thousands)	Gross (1)		Accumulated Amortization (1)		Net (1)		Gross (1)		Accumulated Amortization (1)		Net (1)
Capitalized software development costs	$	2,161	$	(421)	$	1,740	$	1,647	$	(44)	$	1,603
Customer relationships	6,340		(3,803)		2,537		6,340		(3,080)		3,260
Developed and core technology	4,220		(3,754)		466		4,520		(3,693)		827
Distribution rights	—		—		—		308		(281)		27
Patents	33,195		(12,686)		20,509		29,388		(10,790)		18,598
Trademarks and trade names	450		(353)		97		450		(295)		155
Total intangible assets, net	$	46,366	$	(21,017)	$	25,349	$	42,653	$	(18,183)	$	24,470

(1)This table excludes the gross value of fully amortized intangible assets totaling $45.0 million and $43.7 million on December 31, 2023 and 2022, respectively.