Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information - Schedule of Business Segment Information (Details)

v3.21.2
Business Segment Information - Schedule of Business Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2020
Segment Reporting Information [Line Items]          
Net revenues $ 23,100 $ 15,227 $ 60,865 $ 50,379  
Operating income (loss) 1,204 31 2,429 696  
Identifiable assets 115,569   115,569   $ 102,098
Operating Segments | Semiconductor          
Segment Reporting Information [Line Items]          
Net revenues 19,501 12,357 52,195 41,581  
Operating income (loss) 2,114 1,058 5,976 3,762  
Identifiable assets 65,155   65,155   51,648
Operating Segments | Material and Substrate          
Segment Reporting Information [Line Items]          
Net revenues 3,599 2,870 8,670 8,155  
Operating income (loss) 333 241 14 1,196  
Identifiable assets 20,630   20,630   12,717
Non-Segment Related          
Segment Reporting Information [Line Items]          
Net revenues       643  
Operating income (loss) (1,243) $ (1,268) (3,561) $ (4,262)  
Identifiable assets $ 29,784   $ 29,784   $ 37,733