LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate			6.00%
Cash Interest	$ (10,678)	$ (10,381)	$ (21,030)	$ (20,501)
Amort. Debt Discount	(1,079)	(990)	(2,127)	(1,952)
Amort. Deferred Cost & Other Fees	635	641	1,258	1,313
Total Interest Expense	$ (12,392)	(12,012)	$ (24,415)	$ (23,766)
Senior notes due 2022 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.50%		5.50%	5.50%
Cash Interest	$ (7,875)	(7,875)	$ (15,750)	$ (15,750)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	323	322	645	644
Total Interest Expense	(8,198)	(8,197)	(16,395)	(16,394)
Revolver due 2019 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(954)	(659)	(1,525)	(997)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	122	133	237	291
Total Interest Expense	$ (1,076)	$ (792)	$ (1,762)	$ (1,288)
Convert. debt due 2017 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	9.20%	9.10%	9.00%	9.20%
Cash Interest	$ (1,000)	$ (1,000)	$ (2,000)	$ (2,000)
Amort. Debt Discount	(1,079)	(990)	(2,127)	(1,952)
Amort. Deferred Cost & Other Fees	111	110	222	221
Total Interest Expense	$ (2,190)	$ (2,100)	$ (4,349)	$ (4,173)
Real estate mortgages [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	2.20%	3.80%	2.10%	3.80%
Cash Interest	$ (154)	$ (116)	$ (305)	$ (240)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	17	36	29	72
Total Interest Expense	$ (171)	$ (152)	$ (334)	$ (312)
ESOP Loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	3.30%	2.90%	3.10%	2.90%
Cash Interest	$ (275)	$ (254)	$ (531)	$ (514)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	17	18	35	35
Total Interest Expense	$ (292)	$ (272)	$ (566)	$ (549)
Capital lease - real estate [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	5.40%	5.30%	5.40%	5.30%
Cash Interest	$ (90)	$ (102)	$ (183)	$ (208)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	7	6	13	12
Total Interest Expense	(97)	(108)	(196)	(220)
Non U.S. lines of credit [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(97)	(109)	(356)	(250)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	22	0	46	0
Total Interest Expense	(119)	(109)	(402)	(250)
Non U.S. term loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(272)	(337)	(556)	(725)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	13	14	26	30
Total Interest Expense	(285)	(351)	(582)	(755)
Other long term debt [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(79)	(22)	(98)	(53)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	0	2	0	8
Total Interest Expense	(79)	(24)	(98)	(61)
Capitalized interest [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(118)	(93)	(274)	(236)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	3	0	5	0
Total Interest Expense	$ (115)	$ (93)	$ (269)	$ (236)