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Major Customers (Tables)
12 Months Ended
Dec. 31, 2019
Major Customers [Abstract]  
Schedule Of Sales To Largest Customers Sales to our largest customers were as follows for the indicated periods:

 

 

 

 

Year ended December 31,

(in thousands)

 

2019

 

 

2018

 

 

2017

 

International Business Machines Corporation

$

*

 

$

323,795

 

$

284,636

 

Applied Materials, Inc.

$

*

 

$

*

 

$

248,183

* amount is less than 10% of total sales.