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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.

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Amount of other research and development expense.

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Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Sep. 30, 2016 USD ($) shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2016 GBP (£)
Significant Accounting Policies [Line Items]
Patent costs	$ 200,000	$ 500,000
Advertising Expense	105,000	96,000
Cash, FDIC Insured Amount	250,000
Cash, Uninsured Amount	2,031,000	746,000
Accrual For Contract Losses	$ 110,000	$ 110,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares	123,147	58,212
Shipping and Handling Revenue	$ 49,000	$ 49,000
Research and Development Expense, Total	998,000	1,244,000
Other Research and Development Expense	1,000,000	1,200,000
Unamortized Debt Issuance Expense	$ 3,000	$ 12,000
Hilger Crystals, Ltd [Member]
Significant Accounting Policies [Line Items]
Cash, FDIC Insured Amount \| £			£ 75,000
Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements \| shares	35,938	7,924
Maximum [Member]
Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Minimum [Member]
Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Transportation Equipment [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Building and Building Improvements [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Building and Building Improvements [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	8 years
Machinery and Equipment [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Machinery and Equipment [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture and Fixtures [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Furniture and Fixtures [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Significant Accounting Policies [Line Items]
Accounts Receivable, Net, Total	$ 1,159,000	$ 921,000
Concentration Risk, Percentage	32.00%	26.00%
Radiation Monitoring Devices, Inc [Member]
Significant Accounting Policies [Line Items]
Research and Development Expense, Total	$ 12,200,000	$ 10,500,000
Xcede Technologies inc [Member]
Significant Accounting Policies [Line Items]
Finite-Lived Patents, Gross	$ 100,000	$ 100,000
Noncontrolling Interest, Ownership Percentage by Parent	83.00%		83.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	17.00%		17.00%