Note 4. Goodwill and Intangible Assets (Notes)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

4. Goodwill and Intangible Assets

Goodwill

Goodwill for our modules business consisted of the following at December 31, 2025 and 2024 (in thousands):

	December 31, 2024		Acquisitions (Impairments)		Foreign Currency Translation Adjustments		December 31, 2025
Gross amount	$	421,700	$	—	$	2,760	$	424,460
Accumulated impairment losses	(393,365)		—		—		(393,365)
Total	$	28,335	$	—	$	2,760	$	31,095

	December 31, 2023		Acquisitions (Impairments)		Foreign Currency Translation Adjustments		December 31, 2024
Gross amount	$	423,052	$	—	$	(1,352)	$	421,700
Accumulated impairment losses	(393,365)		—		—		(393,365)
Total	$	29,687	$	—	$	(1,352)	$	28,335

We performed our annual impairment analysis in the fourth quarters of 2025 and 2024. As permitted by ASC 350-20, we performed a qualitative assessment for our modules business in each respective period and concluded that it was not more likely than not that the fair value of the business was less than its carrying amount. Accordingly, a quantitative goodwill impairment test was not required in any period presented.

Intangible assets, net

The following tables summarize our intangible assets at December 31, 2025 and 2024 (in thousands):

	December 31, 2025
	Gross Amount		Accumulated Amortization		Net Amount
Developed technology	$	97,645	$	(92,333)	$	5,312
In-process research and development	43,159		—		43,159
Patents	10,500		(7,964)		2,536
Total	$	151,304	$	(100,297)	$	51,007

	December 31, 2024
	Gross Amount		Accumulated Amortization		Net Amount
Developed technology	$	97,645	$	(88,717)	$	8,928
In-process research and development	43,159		—		43,159
Patents	10,068		(7,501)		2,567
Total	$	150,872	$	(96,218)	$	54,654

Amortization of intangible assets was $4.1 million, $10.5 million, and $10.5 million for the years ended December 31, 2025, 2024, and 2023, respectively.

Estimated future amortization expense for our definite-lived intangible assets was as follows at December 31, 2025 (in thousands):

	Amortization Expense
2026	$	2,739
2027	2,639
2028	920
2029	536
2030	279
Thereafter	735
Total amortization expense	$	7,848