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Subsequent Events	9 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On September 7, 2017, we signed a purchase agreement for the sale of our corporate headquarters in Minnetonka, Minnesota to Minnetonka Leased Housing Associates II, LLLP for $10.0 million. The agreement had several contingencies, one of which was dependent upon government and financing approvals. Subsequent to the end of the third fiscal quarter of 2018, the final contingency was satisfied on July 23, 2018 at which time we moved the net book value of the land, building and related leasehold improvements as held-for-sale. The sale of our corporate building is part of our ongoing plan to relocate our corporate headquarters in the Minneapolis area. We expect to close on this transaction by October 2018.