Xcede Technologies, Inc. Joint Venture (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Nov. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Committed Investment In Cash	$ 1,200,000
Debt Conversion, Original Debt, Amount		$ 5,500,000
Debt Conversion, Converted Instrument, Amount		0	$ 2,000,000
Gain (Loss) on Extinguishment of Debt		1,900,000
Notes Payable to Bank	$ 1,500,000
Noncontrolling Interest [Member]
Gain (Loss) on Extinguishment of Debt		$ 300,000
Xcede Technologies inc [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Capital Stock Financing Discount Percentage	20.00%
Noncontrolling Interest, Ownership Percentage by Parent		61.00%
Debt Conversion, Converted Instrument, Shares Issued	5,394,120
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.
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
Outsiders Investors [Member]
Debt Conversion, Original Debt, Amount	$ 3,100,000
Debt Conversion, Converted Instrument, Shares Issued	3,055,551
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%
Debt Instrument, Maturity Date	Dec. 31, 2025
Expense Recognized In Long Term Contract		$ 306,000
Imputed Interest Rate		5.40%
Proceeds from Notes Payable	$ 500,000
Series B Preferred Stock [Member]
Preferred Stock, Liquidation Preference Per Share		$ 1.27
Preferred Stock, Liquidation Preference, Value		$ 800,000
Series B Preferred Stock [Member] | Xcede Technologies inc [Member]
Proceeds from Notes Payable		600,000
Series A Preferred Stock [Member]
Debt Conversion, Converted Instrument, Amount		$ 3,600,000
Preferred Stock, Liquidation Preference Per Share		$ 1.016
Preferred Stock, Liquidation Preference, Value		$ 5,500,000
Series A Preferred Stock [Member] | Noncontrolling Shareholders [Member]
Preferred Stock, Liquidation Preference, Value		3,100,000
Series A Preferred Stock [Member] | Dynasil Biomedical [Member]
Preferred Stock, Liquidation Preference, Value		$ 2,400,000