Fair Value Measurements - Schedule of Contingent Consideration Liabilities Measured at Fair Value (Detail) $ in Thousands	3 Months Ended
	Dec. 31, 2021 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Contingent consideration expense	$ 3
Contingent Consideration [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Contingent consideration liability, beginning balance	817
Contingent consideration expense	3
Contingent consideration liability, ending balance	$ 820