DISCONTINUED OPERATIONS - Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations	$ (533)	$ (1,615)	$ (8,179)	$ 94,872
PPC [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		0		166,262
Cost of goods and services		0		132,100
Gross profit		0		34,162
Selling, general and administrative expenses		200		26,303
Income from discontinued operations		(200)		7,859
Gain on sale of business		0		117,625
Interest expense, net		0		(155)
Other, net		0		(687)
Total other income (expense)		0		116,783
Income (loss) from discontinued operations		$ (200)		$ 124,642

Disposal Group, Including Discontinued Operation, Interest Income (Expense)

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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