LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate			6.00%
Cash Interest	$ (11,153)	$ (10,541)	$ (32,183)	$ (31,041)
Amort. Debt Discount	(1,129)	(1,004)	(3,256)	(2,956)
Amort. Deferred Cost & Other Fees	757	624	2,015	1,938
Total Interest Expense	$ (13,039)	(12,169)	$ (37,454)	$ (35,935)
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	$ (8,641)	(7,875)	$ (24,391)	$ (23,625)
Amort. Debt Discount	(36)	0	(36)	0
Amort. Deferred Cost & Other Fees	383	323	1,028	967
Total Interest Expense	(9,060)	(8,198)	(25,455)	(24,592)
Revolver due 2019 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(660)	(761)	(2,185)	(1,758)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	137	116	374	407
Total Interest Expense	$ (797)	$ (877)	$ (2,559)	$ (2,165)
Convert. debt due 2017 [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	9.10%	9.10%	9.00%	9.20%
Cash Interest	$ (1,000)	$ (1,000)	$ (3,000)	$ (3,000)
Amort. Debt Discount	(1,093)	(1,004)	(3,220)	(2,956)
Amort. Deferred Cost & Other Fees	111	111	333	332
Total Interest Expense	$ (2,204)	$ (2,115)	$ (6,553)	$ (6,288)
Real estate mortgages [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	2.30%	3.80%	2.20%	3.80%
Cash Interest	$ (194)	$ (117)	$ (499)	$ (357)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	26	36	55	108
Total Interest Expense	$ (220)	$ (153)	$ (554)	$ (465)
ESOP Loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Effective Interest Rate	3.30%	2.90%	3.20%	2.90%
Cash Interest	$ (274)	$ (255)	$ (805)	$ (769)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	18	17	53	52
Total Interest Expense	$ (292)	$ (272)	$ (858)	$ (821)
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	$ (87)	$ (100)	$ (270)	$ (308)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	6	6	19	19
Total Interest Expense	(93)	(106)	(289)	(327)
Non U.S. lines of credit [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(367)	(195)	(723)	(445)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	23	0	69	0
Total Interest Expense	(390)	(195)	(792)	(445)
Non U.S. term loans [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(276)	(324)	(832)	(1,049)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	53	14	79	44
Total Interest Expense	(329)	(338)	(911)	(1,093)
Other long term debt [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(97)	(12)	(195)	(65)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	0	1	0	9
Total Interest Expense	(97)	(13)	(195)	(74)
Capitalized interest [Member]
LONG-TERM DEBT (Details) - Summary of Interest Expense Incurred [Line Items]
Cash Interest	(443)	(98)	(717)	(335)
Amort. Debt Discount	0	0	0	0
Amort. Deferred Cost & Other Fees	0	0	5	0
Total Interest Expense	$ (443)	$ (98)	$ (712)	$ (335)