Income Taxes (Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	[1]	Sep. 30, 2017	[1]
Current:
Federal	$ 950	$ 526		$ 312
State	290	57		165
Foreign	746	1,412		1,756
Deferred:
U.S.	(825)	(536)		(1,432)
Foreign	26	160		(654)
Income tax provision	$ 1,187	$ 1,619		$ 147

[1] Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which we adopted on October 1, 2018.