DISCONTINUED OPERATIONS - Balance Sheets Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
ASSETS
Total Assets Held for Sale	$ 3,256	$ 374,013
PPC [Member] | Discontinued Operations, Held-for-sale [Member]
ASSETS
Accounts receivable, net		51,768
Inventories, net		45,742
Prepaid and other current assets		11,000
PROPERTY, PLANT AND EQUIPMENT, net		185,940
GOODWILL		57,087
INTANGIBLE ASSETS, net		12,298
OTHER ASSETS		6,889
Total Assets Held for Sale		370,724
LIABILITIES
Notes payable and current portion of long-term debt		11,163
Accounts payable		36,619
Accrued liabilities		14,553
LONG-TERM DEBT, net		10,549
OTHER LIABILITIES		11,566
Total Liabilities Held for Sale		$ 84,450