Annual report pursuant to Section 13 and 15(d)

Reportable Segments - Schedule of Reportable Segment Information (Details)

v3.22.2.2
Reportable Segments - Schedule of Reportable Segment Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Segment Reporting Information [Line Items]      
Net revenues $ 106,298 $ 85,205 $ 65,463
Operating income (loss) 17,286 3,725 (485)
Capital expenditures 1,135 3,012 2,676
Depreciation and amortization 1,729 1,398 1,258
Identifiable assets 133,534 116,913  
Continuing Operations      
Segment Reporting Information [Line Items]      
Capital expenditures 1,135 3,012 2,675
Depreciation and amortization 1,729 1,398 1,078
Operating Segments | Semiconductor      
Segment Reporting Information [Line Items]      
Net revenues 87,982 72,086 54,516
Operating income (loss) 20,672 8,585 4,168
Identifiable assets 75,622 70,631  
Operating Segments | Semiconductor | Continuing Operations      
Segment Reporting Information [Line Items]      
Capital expenditures 452 2,264 912
Depreciation and amortization 1,101 905 821
Operating Segments | Material and Substrate      
Segment Reporting Information [Line Items]      
Net revenues 18,316 13,119 10,304
Operating income (loss) 3,728 278 684
Identifiable assets 22,032 19,541  
Operating Segments | Material and Substrate | Continuing Operations      
Segment Reporting Information [Line Items]      
Capital expenditures 411 695 1,724
Depreciation and amortization 565 438 197
Non-Segment Related      
Segment Reporting Information [Line Items]      
Net revenues 0 0 643
Operating income (loss) (7,114) (5,138) (5,337)
Identifiable assets [1] 35,880 26,741  
Non-Segment Related | Continuing Operations      
Segment Reporting Information [Line Items]      
Capital expenditures 272 53 39
Depreciation and amortization $ 63 $ 55 $ 60
[1] Non-segment related assets include cash, property and other assets.