Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2019	Dec. 01, 2019	Mar. 31, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	PANHANDLE OIL & GAS INC
Entity Central Index Key	0000315131
Trading Symbol	PHX
Document Type	10-K
Document Period End Date	Sep. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
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 Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity File Number	001-31759
Entity Tax Identification Number	731055775
Entity Address, Address Line One	Grand Centre
Entity Address, Address Line Two	Suite 300
Entity Address, Address Line Three	5400 N. Grand Blvd
Entity Address, City or Town	Oklahoma City
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	73112
City Area Code	(405)
Local Phone Number	948-1560
Entity Common Stock, Shares Outstanding		16,339,255
Entity Public Float			$ 246,376,520