Segment Information and Foreign Operations (Tables)

12 Months Ended

Dec. 31, 2020

Segment Information and Foreign Operations

Revenues reported by product type

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

	Year Ended
	December 31,
	2020		2019		2018
Product Type:
Substrates	$	75,587	$	67,849	$	81,008
Raw materials and others		19,774		15,407		21,389
Total	$	95,361	$	83,256	$	102,397

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:

	Year Ended
	December 31,
	2020		2019		2018
Geographical region:
China	$	35,150	$	26,796	$	31,492
Taiwan		16,485		16,204		20,078
Japan		7,624		6,258		10,305
Asia Pacific (excluding China, Taiwan and Japan)		5,458		7,592		8,488
Europe (primarily Germany)		19,673		18,178		22,013
North America (primarily the United States)		10,971		8,228		10,021
Total	$	95,361	$	83,256	$	102,397

Long-lived assets by geographic region

Long-lived assets consist primarily of property, plant and equipment, and operating lease right-of-use assets 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 December 31,
	2020		2019
Long-lived assets by geographic region, net of depreciation:
North America	$	836	$	1,069
China		117,672		99,272
	$	118,508	$	100,341