Segment Information and Foreign Operations (Tables)

3 Months Ended

Mar. 31, 2023

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,
	2023		2022
Product Type:
Substrates	$	13,489	$	31,745
Raw Materials and Other		5,916		7,908
Total	$	19,405	$	39,653

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,
	2023		2022
Geographical region:
China	$	8,102	$	17,480
Taiwan		2,471		6,859
Japan		1,535		2,807
Asia Pacific (excluding China, Taiwan and Japan)		1,091		1,756
Europe (primarily Germany)		3,570		6,394
North America (primarily the United States)		2,636		4,357
Total	$	19,405	$	39,653

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,
	2023		2022
Long-lived assets by geographic region, net of depreciation:
North America	$	273	$	346
China		163,910		162,432
	$	164,183	$	162,778