Segment Information and Foreign Operations (Tables)

3 Months Ended

Mar. 31, 2025

Segment Information and Foreign Operations

Revenues reported by product type

The following table represents revenue amounts (in thousands) by product type:

	Three Months Ended
	March 31,
	2025		2024
Product Type:
Substrates	$	11,082	$	16,903
Raw Materials and Other		8,274		5,785
Total	$	19,356	$	22,688

Revenue reported for products shipped to customers in the corresponding geographic region

The following table represents revenue amounts (in thousands) reported for products shipped to customers in the corresponding geographic region:

	Three Months Ended
	March 31,
	2025		2024
Geographical region:
China	$	13,426	$	11,517
Taiwan		1,221		4,582
Japan		718		990
Asia Pacific (excluding China, Taiwan and Japan)		781		798
Europe (primarily Germany)		2,101		3,725
North America (primarily the United States)		1,109		1,076
Total	$	19,356	$	22,688

Long-lived assets by geographic region

Long-lived assets consist primarily of property, plant and equipment and operating lease right-of-use assets, and are attributed to the geographic location in which they are located. Long-lived assets, net of depreciation, by geographic region were as follows (in thousands):

	As of
	March 31,		December 31,
	2025		2024
Long-lived assets by geographic region, net of depreciation:
North America	$	1,281	$	1,353
China		160,107		160,847
	$	161,388	$	162,200