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Segment and Geographical Information - Segment Revenue, Operating (Loss) Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 22,227 | $ 17,790 | $ 58,298 | $ 53,054
Operating (loss) income | (6,250) | 1,743 | (6,359) | 6,688
Depreciation and amortization | 1,605 | 1,405 | 4,711 | 4,006
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating (loss) income | (4,017) | 3,633 | (82) | 12,549
Operating Segments [Member] | Medical Device [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 16,701 | 12,778 | 43,527 | 39,260
Operating (loss) income | (6,193) | 1,403 | (6,351) | 6,627
Depreciation and amortization | 1,333 | 1,132 | 3,929 | 3,180
Operating Segments [Member] | In Vitro Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 5,526 | 5,012 | 14,771 | 13,794
Operating (loss) income | 2,176 | 2,230 | 6,269 | 5,922
Depreciation and amortization | 101 | 103 | 291 | 309
Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating (loss) income | (2,233) | (1,890) | (6,277) | (5,861)
Depreciation and amortization | $ 171 | $ 170 | $ 491 | $ 517

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