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Xcede Technologies, Inc. Joint Venture (Details Textual) - USD ($)	1 Months Ended			12 Months Ended
	Sep. 30, 2018	Jul. 20, 2018	Nov. 30, 2016	Sep. 30, 2018	Sep. 30, 2017
Debt Conversion, Original Debt, Amount			$ 5,500,000	$ 5,500,000
Gain (Loss) on Extinguishment of Debt			1,900,000	$ 1,900,000
Secured Debt, Outstanding Amount	$ 500,000	$ 500,000
Line of Credit Facility, Maximum Borrowing Capacity			1,500,000
Debt Instrument, Maturity Date		Dec. 31, 2025
Other Research and Development Expense	$ 35,000
Noncontrolling Interest [Member]
Debt Conversion, Original Debt, Amount			$ 3,100,000
Debt Conversion, Converted Instrument, Shares Issued			3,055,551
Gain (Loss) on Extinguishment of Debt			$ 300,000
Xcede Technologies inc [Member]
Debt Instrument, Interest Rate, Stated Percentage			5.00%
Committed Investment In Cash			$ 1,200,000
Debt Conversion, Converted Instrument, Shares Issued			5,394,120
Capital Stock Financing Discount Percentage			20.00%
Noncontrolling Interest, Description				Noncontrolling interest represents the value of the Series A Preferred and common stock not owned by DBM plus 17% of cumulative losses of Xcede based on the 17% common stock ownership held by noncontrolling interests.
Equity Method Investment, Ownership Percentage	63.00%			63.00%
Dynasil Biomedical [Member]
Debt Conversion, Original Debt, Amount			$ 2,400,000
Debt Conversion, Converted Instrument, Shares Issued			2,338,569
Gain (Loss) on Extinguishment of Debt			$ 1,600,000
External Funding [Member] \| Convertible Debt [Member]
Debt Conversion, Original Debt, Amount			$ 5,200,000
Secured Promissory Note [Member] \| Xcede Technologies inc [Member]
Debt Instrument, Interest Rate, Stated Percentage			2.00%
Expense Recognized In Long Term Contract				$ 166,000	$ 306,000
Imputed Interest Rate				5.40%
Proceeds from Notes Payable			$ 500,000
Debt Instrument, Maturity Date			Dec. 31, 2025
Series B Preferred Stock [Member]
Preferred Stock, Liquidation Preference Per Share	$ 1.27			$ 1.27
Preferred Stock, Liquidation Preference, Value	$ 1,500,000			$ 1,500,000
Series A Preferred Stock [Member]
Debt Conversion, Converted Instrument, Amount				$ 3,600,000
Preferred Stock, Liquidation Preference Per Share	$ 1.016			$ 1.016
Preferred Stock, Liquidation Preference, Value	$ 5,500,000			$ 5,500,000
Series A Preferred Stock [Member] \| Noncontrolling Shareholders [Member]
Preferred Stock, Liquidation Preference, Value	3,100,000			3,100,000
Series A Preferred Stock [Member] \| Dynasil Biomedical [Member]
Preferred Stock, Liquidation Preference, Value	$ 2,400,000			$ 2,400,000