Document And Entity Information (USD $)	12 Months Ended
	Jun. 30, 2013	Sep. 01, 2013	Dec. 31, 2012
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Entity Registrant Name	UROLOGIX INC
Entity Central Index Key	0000882873
Current Fiscal Year End Date	--06-30
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		21,105,926
Entity Public Float			$ 13,648,114
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No