Property, Plant and Equipment (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 16,993,000	$ 16,001,000
Less accumulated depreciation	(9,961,000)	(8,778,000)
Property, Plant and Equipment, net	7,032,000	7,223,000
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	161,000	157,000
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,474,000	3,429,000
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	12,318,000	11,530,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	987,000	832,000
Transportation equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 53,000	$ 53,000