LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	$ 15,298	$ 15,596
Amort. Debt Discount	68	67
Amort. Deferred Cost & Other Fees	(1,163)	(1,176)
Total Interest Expense	$ 16,529	$ 16,839
Senior notes due 2022 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.70%	5.60%
Cash Interest, including amounts capitalized	$ 13,125	$ 13,125
Amort. Debt Discount	68	67
Amort. Deferred Cost & Other Fees	(951)	(939)
Total Interest Expense	14,144	14,131
Revolver due 2021 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest, including amounts capitalized	933	1,356
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(141)	(141)
Total Interest Expense	1,074	$ 1,497
Real estate mortgages [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate		2.40%
Cash Interest, including amounts capitalized	0	$ 185
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	0	(17)
Total Interest Expense	$ 0	$ 202
ESOP Loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.50%	3.30%
Cash Interest, including amounts capitalized	$ 488	$ 413
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(31)	(31)
Total Interest Expense	$ 519	$ 444
Capital lease - real estate [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.60%	5.40%
Cash Interest, including amounts capitalized	$ 115	$ 164
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(6)	(6)
Total Interest Expense	121	170
Non U.S. lines of credit [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest, including amounts capitalized	7	7
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(4)	(8)
Total Interest Expense	11	15
Non U.S. term loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest, including amounts capitalized	448	334
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(27)	(33)
Total Interest Expense	475	367
Other long term debt [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest, including amounts capitalized	182	115
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	(3)	(1)
Total Interest Expense	185	116
Capitalized interest [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest, Capitalized interest	0	103
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	0	0
Total Interest Expense	$ 0	$ 103