INCOME TAXES (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Domestic and foreign components of income (loss) before income taxes [Abstract]
Domestic and foreign components of income (loss) before income taxes	$ (5,867,000)	$ 1,945,000
Components of the provision for income taxes and deferred taxes [Abstract]
Federal, current	23,000	38,000
State, current	41,000	85,000
Foreign, current	96,000	(16,000)
Provision (benefit) for income taxes and deferred taxes, current	160,000	107,000
Federal, deferred	124,000	349,000
State, deferred	24,000	3,000
Foreign, deferred	(309,000)	(53,000)
Provision (benefit) for income taxes and deferred taxes, deferred	$ (161,000)	$ 299,000
Provision (benefit) for income taxes [Abstract]
Statutory Federal income tax rate	34.00%	34.00%
Computed tax provision at statutory rate	$ (1,995,000)	$ 659,000
Increases (decreases) resulting from [Abstract]
Foreign tax rate differentials	693,000	(163,000)
State taxes net of federal tax benefit	42,000	57,000
Foreign research incentives	(313,000)	(544,000)
Losses surrendered for cash research incentive	442,000	378,000
U.K. rate change	436,000	5,000
Other non-deductible expenses	48,000	0
Non-deductible interest	106,000	0
Transaction costs	480,000	0
Other	60,000	14,000
Income tax (benefit) provision in the consolidated statements of operations	(1,000)	406,000
Long-term deferred tax assets	4,289,000	4,476,000
Long-term deferred tax liabilities	1,517,000	0
Assets [Abstract]
Pension accruals	2,225,000	2,417,000
Inventory basis differences	62,000	72,000
Warranty reserves	87,000	67,000
Foreign tax credit carry forwards	134,000	203,000
Accrued compensation expense	66,000	54,000
Net operating losses	2,161,000	1,921,000
Other (net)	193,000	215,000
Total assets	4,928,000	4,949,000
Liabilities [Abstract]
Property basis (liability)	(284,000)	(232,000)
Intangible asset basis difference	(1,550,000)
Net asset	3,094,000	4,717,000
Valuation allowance	(322,000)	(241,000)
Net deferred tax asset	2,772,000	4,476,000
Unremitted foreign earnings	8,300,000
Domestic [Member]
Domestic and foreign components of income (loss) before income taxes [Abstract]
Domestic and foreign components of income (loss) before income taxes	376,000	863,000
Liabilities [Abstract]
Net operating losses	$ 39,185
Net operating losses, expiration dates	Sep. 30, 2028
Foreign [Member]
Domestic and foreign components of income (loss) before income taxes [Abstract]
Domestic and foreign components of income (loss) before income taxes	$ (6,243,000)	1,082,000
Liabilities [Abstract]
Net operating losses	10,831,000
Domestic Long-term [Member]
Assets [Abstract]
Pension accruals	427,000	389,000
Inventory basis differences	62,000	72,000
Warranty reserves	53,000	67,000
Foreign tax credit carry forwards	134,000	203,000
Accrued compensation expense	0	0
Net operating losses	2,000	2,000
Other (net)	142,000	214,000
Total assets	820,000	947,000
Liabilities [Abstract]
Property basis (liability)	0
Property basis asset		1,000
Intangible asset basis difference	0
Net asset	820,000	948,000
Valuation allowance	(89,000)	(158,000)
Net deferred tax asset	731,000	790,000
Foreign Long-term [Member]
Assets [Abstract]
Pension accruals	1,798,000	2,028,000
Inventory basis differences	0	0
Warranty reserves	34,000	0
Foreign tax credit carry forwards	0	0
Accrued compensation expense	66,000	54,000
Net operating losses	2,159,000	1,919,000
Other (net)	51,000	1,000
Total assets	4,108,000	4,002,000
Liabilities [Abstract]
Property basis (liability)	(284,000)	(233,000)
Intangible asset basis difference	(1,550,000)
Net asset	2,274,000	3,769,000
Valuation allowance	(233,000)	(83,000)
Net deferred tax asset	2,041,000	3,686,000
U. K. [Member]
Liabilities [Abstract]
Refundable tax credit	$ 595,000	$ 463,000