Accounts Receivable, net - Schedule of Allowance for Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 337	$ 260
Additions from acquisitions	0	106
Provision adjustment - expense, net of recoveries	193	229
Write-offs and other deductions	(174)	(258)
Balance at end of period	$ 356	$ 337