Income Taxes (Details 3) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Domestic [Member]
Income Tax [Line Items]
Credits	$ 3,530,000	$ 1,456,000
NOLs	3,235,000	3,750,000
Stock compensation	203,000	205,000
Accruals	209,000	352,000
Intangibles		5,000
Other	109,000	140,000
Gross deferred tax assets	7,286,000	5,908,000
Valuation allowance	(1,777,000)	(2,342,000)
Deferred tax assets, net	5,509,000	3,566,000
Depreciation	(1,168,000)	(902,000)
Intangibles	(7,000)	(22,000)
Gross deferred tax liabilities	(1,175,000)	(924,000)
Net deferred tax asset (liability)	4,334,000	2,642,000
Foreign [Member]
Income Tax [Line Items]
Credits	0	0
NOLs	25,000	26,000
Stock compensation	0	0
Accruals	0	0
Intangibles		0
Other	0	0
Gross deferred tax assets	25,000	26,000
Valuation allowance	0	0
Deferred tax assets, net	25,000	26,000
Depreciation	(164,000)	(181,000)
Intangibles	(66,000)	(79,000)
Gross deferred tax liabilities	(230,000)	(260,000)
Net deferred tax asset (liability)	(205,000)	(234,000)
Worldwide [Member]
Income Tax [Line Items]
Credits	3,530,000	1,456,000
NOLs	3,260,000	3,776,000
Stock compensation	203,000	205,000
Accruals	209,000	352,000
Intangibles		5,000
Other	109,000	140,000
Gross deferred tax assets	7,311,000	5,934,000
Valuation allowance	(1,777,000)	(2,342,000)
Deferred tax assets, net	5,534,000	3,592,000
Depreciation	(1,332,000)	(1,083,000)
Intangibles	(73,000)	(101,000)
Gross deferred tax liabilities	(1,405,000)	(1,184,000)
Net deferred tax asset (liability)	$ 4,129,000	$ 2,408,000