Income Taxes - Schedule of Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Current:
Federal	$ 1,350	$ 973	$ (7,782)
State	186	201	(101)
Foreign	88	449	350
Current income tax provision	1,624	1,623	(7,533)
Deferred:
Federal	366	(1,834)	392
State	457	(247)	(515)
Foreign	(3)	(89)	223
Deferred income tax provision	820	(2,170)	100
Total income tax provision (benefit)	$ 2,444	$ (547)	$ (7,433)