Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Deferred income tax assets:
Net operating loss carry forwards, net	$ 29	$ 1,554
Stock based compensation	508	140
Accrued expenses	1,944	1,698
Other items, net	0	258
Total deferred tax asset	2,481	3,650
Deferred tax liability:
Equipment and intangible assets	(3,507)	(3,613)
Right of use liability	(150)	0
Total deferred tax liability	(3,657)	(3,613)
Net deferred tax (liability)	$ (1,176)
Net deferred tax asset		$ 37