Document and Entity Information (USD $)	6 Months Ended
	Mar. 31, 2013	Apr. 30, 2012	Mar. 31, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	OFFICIAL PAYMENTS HOLDINGS, INC.
Entity Central Index Key	0001045150
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	Accelerated Filer
Entity Public Float			$ 81,484,216
Entity Common Stock, Shares Outstanding		16,724,477
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013