Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail) - Level 3 $ in Thousands |
12 Months Ended |
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Sep. 30, 2017
USD ($)
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| Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Roll Forward] | |
| Beginning balance | $ 5,113 |
| Estimated contingent performance-based consideration established at the time of acquisition | 2,700 |
| Changes in the fair value of contingent performance-based payments | 2,830 |
| Performance-based payments made | (1,300) |
| Ending balance | $ 9,343 |
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- Definition Business Combination, Contingent Consideration Arrangements, Acquired During Period No definition available.
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- Definition Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Roll Forward] No definition available.
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- Definition Business combination contingent consideration performance based payments made. No definition available.
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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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