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Segment Information and Foreign Operations (Tables)
6 Months Ended
Jun. 30, 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

Six Months Ended

June 30, 

June 30, 

    

2023

    

2022

    

2023

    

2022

 

 

Product Type:

Substrates

$

11,027

$

31,694

$

24,516

$

63,439

Raw Materials and Other

 

7,568

 

7,793

 

13,484

 

15,701

Total

$

18,595

$

39,487

$

38,000

$

79,140

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

Six Months Ended

June 30, 

June 30, 

    

2023

    

2022

    

2023

    

2022

 

 

Geographical region:

China

$

10,289

$

18,445

$

18,391

$

35,925

Taiwan

1,407

7,044

3,878

13,903

Japan

 

1,396

 

2,718

 

2,931

 

5,525

Asia Pacific (excluding China, Taiwan and Japan)

737

662

1,828

2,418

Europe (primarily Germany)

3,015

5,299

6,585

11,693

North America (primarily the United States)

 

1,751

 

5,319

4,387

9,676

Total

$

18,595

$

39,487

$

38,000

$

79,140

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

June 30, 

December 31, 

    

2023

    

2022

 

Long-lived assets by geographic region, net of depreciation:

North America

$

218

$

346

China

 

159,927

 

162,432

$

160,145

$

162,778