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Segment Information - Segment Revenue, Operating Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 26,883 | $ 24,344 | $ 72,321 | $ 69,261
Operating income | 1,164 | 1,017 | 742 | 2,594
Depreciation and amortization | 1,790 | 1,887 | 5,390 | 5,462
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 26,883 | 24,344 | 72,321 | 69,261
Operating income | 3,786 | 3,228 | 7,971 | 8,932
Operating Segments [Member] | Medical Device [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 20,514 | 18,945 | 54,222 | 53,504
Operating income | 532 | 753 | (1,344) | 1,087
Depreciation and amortization | 1,424 | 1,481 | 4,318 | 4,315
Operating Segments [Member] | In Vitro Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 6,369 | 5,399 | 18,099 | 15,757
Operating income | 3,254 | 2,475 | 9,315 | 7,845
Depreciation and amortization | 112 | 120 | 331 | 353
Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income | (2,622) | (2,211) | (7,229) | (6,338)
Depreciation and amortization | $ 254 | $ 286 | $ 741 | $ 794

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