CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) - Summary of consolidated cash flows (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 3,603	$ 9,048		$ 3,342	$ 13,563
Net cash provided by (used in) operating activities				2,554	30,347
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(14,891)	(17,490)		(45,886)	(57,695)
Acquired business, net of cash acquired				0	(22,432)
Intercompany distributions				0	0
Proceeds from sale of assets				1,326	281
Net cash provided by (used in) investing activities				(44,560)	(79,846)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				(25,689)	(5,670)
Proceeds from issuance of long-term debt				303	4,000
Payments of long-term debt				(12,842)	(14,563)
Change in short-term borrowings				2,408	(1,262)
Intercompany debt					0
Financing costs				(759)	(97)
Tax effect from exercise/vesting of equity awards, net				150	834
Dividend				(4,384)	(3,564)
Other, net				261	67
Net cash provided by (used in) financing activities				(40,552)	(20,255)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				(486)	(1,690)
Effect of exchange rate changes on cash and equivalents				(506)	327
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				(83,550)	(71,117)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			243,029	209,654	243,029
CASH AND EQUIVALENTS AT END OF PERIOD	126,104	171,912		126,104	171,912
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	3,909	9,794		4,147	14,561
Net cash provided by (used in) operating activities				(67,628)	(52,124)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(33)	(91)
Acquired business, net of cash acquired					0
Intercompany distributions				10,000	10,000
Proceeds from sale of assets				0	0
Net cash provided by (used in) investing activities				9,967	9,909
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				(25,689)	(5,670)
Proceeds from issuance of long-term debt				0	0
Payments of long-term debt				(1,751)	(1,219)
Change in short-term borrowings				0	0
Intercompany debt					(23,000)
Financing costs				(759)	(65)
Tax effect from exercise/vesting of equity awards, net				150	834
Dividend				(4,384)	(3,564)
Other, net				261	67
Net cash provided by (used in) financing activities				(32,172)	(32,617)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				0	0
Effect of exchange rate changes on cash and equivalents				0	0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				(89,833)	(74,832)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			178,448	125,093	178,448
CASH AND EQUIVALENTS AT END OF PERIOD	35,260	103,616		35,260	103,616
Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	8,708	14,252		17,376	27,177
Net cash provided by (used in) operating activities				23,214	48,598
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(40,324)	(51,582)
Acquired business, net of cash acquired			(22,432)		(22,432)
Intercompany distributions				(10,000)	(10,000)
Proceeds from sale of assets				1,172	183
Net cash provided by (used in) investing activities				(49,152)	(83,831)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				0	0
Proceeds from issuance of long-term debt				303	491,372
Payments of long-term debt				(772)	(4,101)
Change in short-term borrowings				0	0
Intercompany debt					0
Financing costs				0	0
Tax effect from exercise/vesting of equity awards, net				0	0
Dividend				0	(219,516)
Other, net				14,661	(221,132)
Net cash provided by (used in) financing activities				14,192	46,623
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				0	0
Effect of exchange rate changes on cash and equivalents				0	0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				(11,746)	11,390
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			15,164	34,782	15,164
CASH AND EQUIVALENTS AT END OF PERIOD	23,036	26,554		23,036	26,554
Non-Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	8,685	14,231		17,308	27,053
Net cash provided by (used in) operating activities				46,968	33,873
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(5,529)	(6,022)
Intercompany distributions				0	0
Proceeds from sale of assets				154	98
Net cash provided by (used in) investing activities				(5,375)	(5,924)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				0	0
Proceeds from issuance of long-term debt				0	4,000
Payments of long-term debt				(10,319)	(9,243)
Change in short-term borrowings				2,408	(1,262)
Intercompany debt					(468,372)
Financing costs				0	(32)
Tax effect from exercise/vesting of equity awards, net				0	0
Dividend				0	219,516
Other, net				(14,661)	221,132
Net cash provided by (used in) financing activities				(22,572)	(34,261)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				(486)	(1,690)
Effect of exchange rate changes on cash and equivalents				(506)	327
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				18,029	(7,675)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			49,417	49,779	49,417
CASH AND EQUIVALENTS AT END OF PERIOD	67,808	41,742		67,808	41,742
Consolidation, Eliminations [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(17,699)	(29,229)		(35,489)	(55,228)
Net cash provided by (used in) operating activities				0	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				0	0
Acquired business, net of cash acquired					0
Intercompany distributions				0	0
Proceeds from sale of assets				0	0
Net cash provided by (used in) investing activities				0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				0	0
Proceeds from issuance of long-term debt				0	(491,372)
Payments of long-term debt				0	0
Change in short-term borrowings				0
Intercompany debt					491,372
Financing costs				0	0
Tax effect from exercise/vesting of equity awards, net				0	0
Dividend				0	0
Other, net				0	0
Net cash provided by (used in) financing activities				0	0
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				0	0
Effect of exchange rate changes on cash and equivalents				0	0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			0	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	$ 0	$ 0		$ 0	$ 0