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Fair Value Measurements - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Payment for contingent consideration liability, operating activities | $ 608,000 | $ 2,041,000 |
Payment for contingent consideration liability, financing activities | 2,592,000 | $ 9,064,000 |
Transfers in or out Level 3, Assets | 0 |  | $ 0
Transfers in or out Level 3, Liabilities | 0 |  | 0
Transfers out of Level 1 to Level 2, Assets | 0 |  | 0
Transfers into Level 1 out of Level 2, Assets | 0 |  | 0
Transfers out of Level 1 to Level 2, Liabilities | 0 |  | 0
Transfers into Level 1 out of Level 2, Liabilities | 0 |  | $ 0
NorMedix [Member] |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Contingent consideration liability | 3,200,000 |  |
Payment for contingent consideration liability, operating activities | 600,000 |  |
Payment for contingent consideration liability, financing activities | $ 2,600,000 |  |

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