Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2017	May 01, 2017
Document Information [Line Items]
Entity Registrant Name	META FINANCIAL GROUP INC
Entity Central Index Key	0000907471
Current Fiscal Year End Date	--09-30
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		9,349,989
Nonvoting Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0