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Discontinued Operations	9 Months Ended
Discontinued Operations	Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations The Company divested substantially all of its oil and gas working interest properties in 2016 and completed the sale of all oil and gas assets and related entities in 2017. As a result of selling the entities in 2017, the Company recognized a tax benefit of $7.2 million in the nine months ended June 30, 2018 that has been recorded as income from discontinued operations. There was no activity related to these discontinued operations during the nine months ended June 30, 2019.