Goodwill - Schedule of Goodwill (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill [Line Items]
Beginning balance	$ 6,633,000
Goodwill acquired during 2021	4,535,000
Goodwill	11,168,000	$ 6,633,000
Ending Balance	11,168,000
Semiconductor
Goodwill [Line Items]
Beginning balance	5,905,000
Impairment of goodwill	0
Goodwill	5,905,000	5,905,000
Ending Balance	5,905,000
Material and Substrate
Goodwill [Line Items]
Beginning balance	728,000
Goodwill acquired during 2021	4,535,000
Impairment of goodwill	0
Goodwill	5,263,000	$ 728,000
Ending Balance	$ 5,263,000