Intangible Assets - Useful Life (Details) - USD ($)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 1,934,000	$ 1,986,000
Accumulated Amortization	1,307,000	1,231,000
Net	627,000	755,000
Acquired Customer Base [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	682,000	719,000
Accumulated Amortization	632,000	601,000
Net	$ 50,000	$ 118,000
Acquired Customer Base [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	5 years	5 years
Acquired Customer Base [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	15 years	15 years
Know How [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	15 years	15 years
Gross Amount	$ 512,000	$ 512,000
Accumulated Amortization	384,000	350,000
Net	128,000	162,000
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	257,000	272,000
Accumulated Amortization	0	0
Net	$ 257,000	$ 272,000
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	20 years	20 years
Gross Amount	$ 223,000	$ 223,000
Accumulated Amortization	31,000	20,000
Net	$ 192,000	$ 203,000
Biomedical Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	5 years	5 years
Gross Amount	$ 260,000	$ 260,000
Accumulated Amortization	260,000	260,000
Net	$ 0	$ 0