Document And Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2016	Dec. 08, 2016	Mar. 31, 2016
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Entity Registrant Name	DYNASIL CORP OF AMERICA
Entity Central Index Key	0000030831
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 15,798,335
Trading Symbol	DYSL
Entity Common Stock, Shares Outstanding		16,906,265