Summary of Significant Accounting Policies and Select Balance Sheet Information - Schedule Of Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Goodwill [Line Items] | ||
| Beginning Balance | $ 26,555 | $ 8,010 |
| Additions (See Note 3) | 17,892 | |
| Foreign currency translation adjustment | 727 | 653 |
| Ending Balance | 27,282 | 26,555 |
| In Vitro Diagnostics [Member] | ||
| Goodwill [Line Items] | ||
| Beginning Balance | 8,010 | 8,010 |
| Ending Balance | 8,010 | 8,010 |
| Medical Device [Member] | ||
| Goodwill [Line Items] | ||
| Beginning Balance | 18,545 | |
| Additions (See Note 3) | 17,892 | |
| Foreign currency translation adjustment | 727 | 653 |
| Ending Balance | $ 19,272 | $ 18,545 |