LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	$ 15,596	$ 11,403
Amort. Debt Discount	67	1,125
Amort. Deferred Cost & Other Fees	1,176	767
Total Interest Expense	$ 16,839	$ 13,295
Senior notes due 2022 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.60%	5.50%
Cash Interest	$ 13,125	$ 9,516
Amort. Debt Discount	67	67
Amort. Deferred Cost & Other Fees	939	473
Total Interest Expense	14,131	10,056
Revolver due 2021 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	1,356	325
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	141	132
Total Interest Expense	1,497	$ 457
Convert. debt due 2017 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate		9.10%
Cash Interest	0	$ 1,000
Amort. Debt Discount	0	1,058
Amort. Deferred Cost & Other Fees	0	111
Total Interest Expense	$ 0	$ 2,169
Real estate mortgages [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	3.50%	2.40%
Cash Interest	$ 185	$ 120
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	17	2
Total Interest Expense	$ 202	$ 122
ESOP Loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	4.10%	3.30%
Cash Interest	$ 413	$ 364
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	31	27
Total Interest Expense	$ 444	$ 391
Capital lease - real estate [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.50%	5.40%
Cash Interest	$ 164	$ 80
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	6	6
Total Interest Expense	170	86
Non U.S. lines of credit [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	7	4
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	8	3
Total Interest Expense	15	7
Non U.S. term loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	334	222
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	33	11
Total Interest Expense	367	233
Other long term debt [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	115	74
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	1	2
Total Interest Expense	116	76
Capitalized interest [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	103	302
Amort. Debt Discount	0	0
Amort. Deferred Cost & Other Fees	0	0
Total Interest Expense	$ 103	$ 302