Revenues

6 Months Ended

Jun. 30, 2025

Revenue from Contract with Customer [Abstract]

Revenues

6. Revenues

The following tables present the Company’s net revenues disaggregated by geography based on the location of the customer, by product line (in thousands):

	Three Months Ended June 30, 2025
	Brick Products		Advanced Products		Total
United States	$	15,422	$	30,824	$	46,246
Europe		6,142		4,720		10,862
Asia Pacific		13,822		24,880		38,702
All other		94		142		236
	$	35,480	$	60,566	$	96,046

	Six Months Ended June 30, 2025
	Brick Products		Advanced Products		Total
United States	$	28,957	$	54,131	$	83,088
Europe		13,915		6,820		20,735
Asia Pacific		26,623		59,166		85,789
All other		96		306		402
	$	69,591	$	120,423	$	190,014

	Three Months Ended June 30, 2024
	Brick Products		Advanced Products		Total
United States	$	25,431	$	23,231	$	48,662
Europe		6,559		3,431		9,990
Asia Pacific		7,220		19,602		26,822
All other		276		104		380
	$	39,486	$	46,368	$	85,854

	Six Months Ended June 30, 2024
	Brick Products		Advanced Products		Total
United States	$	46,405	$	50,417	$	96,822
Europe		13,416		7,430		20,846
Asia Pacific		19,488		31,654		51,142
All other		769		147		916
	$	80,078	$	89,648	$	169,726

The following tables present the Company’s net revenues disaggregated by the category of revenue, by product line (in thousands):

	Three Months Ended June 30, 2025
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and    non-stocking distributors	$	19,620	$	40,154	$	59,774
Stocking distributors, net of sales allowances		15,604		7,995		23,599
Non-recurring engineering		256		1,704		1,960
Royalties		—		10,353		10,353
Other		—		360		360
	$	35,480	$	60,566	$	96,046

	Six Months Ended June 30, 2025
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and    non-stocking distributors	$	37,902	$	83,642	$	121,544
Stocking distributors, net of sales allowances		30,968		11,841		42,809
Non-recurring engineering		721		3,105		3,826
Royalties		—		21,115		21,115
Other		—		720		720
	$	69,591	$	120,423	$	190,014

	Three Months Ended June 30, 2024
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and    non-stocking distributors	$	20,238	$	27,713	$	47,951
Stocking distributors, net of sales allowances		19,158		8,369		27,527
Non-recurring engineering		90		655		745
Royalties		—		9,271		9,271
Other		—		360		360
	$	39,486	$	46,368	$	85,854

	Six Months Ended June 30, 2024
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and    non-stocking distributors	$	41,048	$	49,353	$	90,401
Stocking distributors, net of sales allowances		38,565		18,001		56,566
Non-recurring engineering		465		4,123		4,588
Royalties		—		17,451		17,451
Other		—		720		720
	$	80,078	$	89,648	$	169,726

The following table presents the changes in certain contract liabilities (in thousands):

	June 30, 2025			December 31, 2024			Change
Short-term deferred revenue and customer prepayments	$	(5,506	)	$	(5,312	)	$	(194	)
Sales allowances		(2,639	)		(1,667	)		(972	)

The Company records deferred revenue, which represents a contract liability, when cash payments are received or due in advance of performance under a contract with a customer. The Company recognized revenue of approximately $574,000 and $1,686,000 for the three and six months ended June 30, 2025, respectively, and approximately $360,000 and $720,000 for the three and six months ended June 30, 2024, respectively, that was included in deferred revenue at the beginning of the respective period.