Intangible Assets (Details) - USD ($)	6 Months Ended	12 Months Ended
	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 2,211,000	$ 2,123,000
Accumulated Amortization	1,214,000	1,136,000
Net	997,000	987,000	$ 1,057,000
Acquired Customer Base [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	768,000	737,000
Accumulated Amortization	607,000	551,000
Net	$ 161,000	$ 186,000
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	333,000	316,000
Net	179,000	196,000
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	293,000	281,000
Accumulated Amortization	0	0
Net	$ 293,000	$ 281,000
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life (years)	20 years	20 years
Gross Amount	$ 378,000	$ 333,000
Accumulated Amortization	14,000	9,000
Net	$ 364,000	$ 324,000
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