Document And Entity Information	6 Months Ended
	Feb. 29, 2012	Apr. 13, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Feb. 29, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Entity Registrant Name	MINN DAK FARMERS COOPERATIVE
Entity Central Index Key	0000948218
Current Fiscal Year End Date	--08-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		480