Revenues

12 Months Ended

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenues

11. 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):

	Year Ended December 31, 2024
	Brick Products		Advanced Products		Total
United States	$	85,347	$	100,487	$	185,834
Europe		27,088		14,715		41,803
Asia Pacific		48,347		81,634		129,981
All other		947		493		1,440
	$	161,729	$	197,329	$	359,058

	Year Ended December 31, 2023
	Brick Products		Advanced Products		Total
United States	$	82,400	$	67,056	$	149,456
Europe		31,792		27,950		59,742
Asia Pacific		63,631		128,636		192,267
All other		3,343		251		3,594
	$	181,166	$	223,893	$	405,059

	Year Ended December 31, 2022
	Brick Products		Advanced Products		Total
United States	$	76,306	$	53,116	$	129,422
Europe		27,856		10,522		38,378
Asia Pacific		49,076		179,259		228,335
All other		2,520		424		2,944
	$	155,758	$	243,321	$	399,079

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

	Year Ended December 31, 2024
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking    distributors	$	88,144	$	113,359	$	201,503
Stocking distributors, net of sales allowances		72,713		31,061		103,774
Non-recurring engineering		872		4,874		5,746
Royalties		—		46,595		46,595
Other		—		1,440		1,440
	$	161,729	$	197,329	$	359,058

	Year Ended December 31, 2023
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and non-stocking    distributors	$	113,448	$	163,549	$	276,997
Stocking distributors, net of sales allowances		66,544		29,893		96,437
Non-recurring engineering		1,174		13,421		14,595
Royalties		—		15,872		15,872
Other		—		1,158		1,158
	$	181,166	$	223,893	$	405,059

	Year Ended December 31, 2022
	Brick Products		Advanced Products		Total
Direct customers, contract manufacturers and    non-stocking distributors	$	102,905	$	216,685	$	319,590
Stocking distributors, net of sales allowances		51,819		13,831		65,650
Non-recurring engineering		1,034		9,933		10,967
Royalties		—		2,801		2,801
Other		—		71		71
	$	155,758	$	243,321	$	399,079

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

	December 31, 2024			December 31, 2023			Change
Short-term deferred revenue and customer prepayments	$	(5,312	)	$	(3,157	)	$	(2,155	)
Long-term deferred revenue		—			(1,020	)		1,020
Sales allowances		(1,667	)		(3,482	)		1,815

During 2024, 2023, and 2022, one customer accounted for approximately 12.1%, 10.7%, and 12.4% of net revenues, respectively.

Net revenues from customers in China (including Hong Kong), accounted for approximately 12.6% of total net revenues in 2024, 17.7% in 2023 and 18.8% in 2022, respectively.