XML 67 R56.htm IDEA: XBRL DOCUMENT v3.22.1
Segment Information and Foreign Operations - Product Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue by product type    
Revenue $ 39,653 $ 31,350
Substrates    
Revenue by product type    
Revenue 31,745 23,373
Raw Materials And Others    
Revenue by product type    
Revenue $ 7,908 $ 7,977