DISCONTINUED OPERATIONS - Income Statement Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Feb. 06, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		$ 0	$ 0	$ 0	$ 0
Income (loss) from discontinued operations (including a gain on sale, net of tax of $86,357 in 2018)		(1,615,000)	5,102,000	94,872,000	13,417,000
PPC [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		0	115,206,000	166,262,000	341,986,000
Cost of goods and services		0	97,233,000	132,100,000	287,948,000
Gross profit		0	17,973,000	34,162,000	54,038,000
Selling, general and administrative expenses		200,000	10,184,000	26,303,000	31,600,000
Income from discontinued operations		(200,000)	7,789,000	7,859,000	22,438,000
Gain on sale of business	$ 117,625,000	0	0	117,625,000
Interest expense, net		0	(50,000)	(155,000)	(45,000)
Other, net		0	(715,000)	(687,000)	(754,000)
Total other income (expense)		0	(765,000)	116,783,000	(799,000)
Income (loss) from discontinued operations (including a gain on sale, net of tax of $86,357 in 2018)		$ (200,000)	$ 7,024,000	$ 124,642,000	$ 21,639,000