Segment Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Information
Gain on sale of fixed assets	$ 32,563		$ 32,563
Unallocated corporate expenses and other
Segment Information
Gain on sale of fixed assets			32,600
Expense related to strategic and IT system resource planning	$ 2,400	$ 5,000	$ 6,300	$ 18,800