Summary of Significant Accounting Policies (Detail Textual) (USD $)	12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2010
Patent costs	$ 393,040		$ 315,549
Useful Life Year	15 years		15 years		4 years
Deferred financing costs	165,457		150,656
Accumulated Amortization, Deferred Finance Costs	90,697		48,898
Amortization of Deferred Charges	41,799		39,912
Advertising Expense	118,250		246,426
Deferred rent	48,833		96,840
Accounts Receivable, Net	1,608,073		1,762,872
Concentration Risk, Percentage	28.00%		24.00%
Cash, FDIC Insured Amount	250,000
Cash, Uninsured Amount	3,022,713		3,308,182
Goodwill impairment on Dynasil Products	(2,284,499)
Accounts Payable and Accrued Liabilities	90,162		0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	127,834
Weighted Average Number Of Diluted Shares Outstanding Assumed	194,778
Shipping and Handling Revenue	94,852		71,125
Research and Development Expense	25,235,228		23,985,088
2013	651,348
2014	651,348
2015	651,348
2016	651,345
2017	591,348
Restricted Stock and Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	922,317
Radiation Monitoring Devices [Member]
Research and Development Expense	15,410,859		14,945,521
2013	51,228
2014	51,228
2015	42,236
2016	11,316
2017	9,449
Trade Names [Member]
Useful Life Year	15 years		15 years
Customer Relationships [Member]
Useful Life Year	10 years
Geographic Concentration Risk [Member]
Accounts Receivable, Net	$ 1,608,073		$ 1,762,872
Concentration Risk, Percentage	28.00%		24.00%
Transportation Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives	5 Years
Minimum [Member]
Useful Life Year	4 years
Minimum [Member] | Trade Names [Member]
Useful Life Year	15 years		15 years
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives	8 Years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives	5 Years
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Estimated Useful Lives	5 Years
Maximum [Member]
Useful Life Year	15 years
Maximum [Member] | Trade Names [Member]
Useful Life Year	0 years	[1]	0 years	[1]
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives	25 Years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives	10 Years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Estimated Useful Lives	10 Years

[1] Indifinite