Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Sep. 28, 2015	Dec. 31, 2014
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Entity Registrant Name	United Community Bancorp
Entity Central Index Key	0001514131
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 48.7
Trading Symbol	CIK0001514131
Entity Common Stock, Shares Outstanding		4,533,382