CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Detail) - Summary of consolidated cash flows (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (819)	$ 2,027		$ (261)	$ 4,513
Net cash provided by (used in) operating activities				(33,983)	(2,208)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(13,707)	(20,313)		(30,995)	(40,205)
Acquired business, net of cash acquired				0	(22,432)
Intercompany distributions				0	0
Proceeds from sale of assets				1,216	195
Net cash provided by (used in) investing activities				(29,779)	(62,442)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				(22,109)	(2,350)
Proceeds from issuance of long-term debt				303	4,000
Payments of long-term debt				(5,400)	(10,398)
Change in short-term borrowings				2,157	(3,331)
Intercompany debt					0
Financing costs				(759)	(4)
Tax effect from exercise/vesting of equity awards, net				150	834
Dividend				(2,938)	(2,374)
Other, net				242	(29)
Net cash provided by (used in) financing activities				(28,354)	(13,652)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				(478)	(764)
Effect of exchange rate changes on cash and equivalents				(138)	916
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				(92,732)	(78,150)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			243,029	209,654	243,029
CASH AND EQUIVALENTS AT END OF PERIOD	116,922	164,879		116,922	164,879
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(399)	2,027		239	4,513
Net cash provided by (used in) operating activities				(43,968)	(59,324)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(24)	(74)
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				9,976	9,926
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				(22,109)	(2,350)
Proceeds from issuance of long-term debt				0	0
Payments of long-term debt				(813)	(813)
Change in short-term borrowings				0	0
Intercompany debt					(23,000)
Financing costs				(759)	(4)
Tax effect from exercise/vesting of equity awards, net				150	834
Dividend				(2,938)	(2,374)
Other, net				242	(29)
Net cash provided by (used in) financing activities				(26,227)	(27,736)
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				(60,219)	(77,134)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			178,448	125,093	178,448
CASH AND EQUIVALENTS AT END OF PERIOD	64,874	101,314		64,874	101,314
Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	2,326	6,612		8,670	12,671
Net cash provided by (used in) operating activities				(26,900)	8,258
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(28,624)	(35,119)
Acquired business, net of cash acquired			(22,432)		0
Intercompany distributions				(10,000)	(10,000)
Proceeds from sale of assets				1,171	140
Net cash provided by (used in) investing activities				(37,453)	(44,979)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury				0	0
Proceeds from issuance of long-term debt				303	0
Payments of long-term debt				(514)	(3,852)
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	0
Other, net				44,885	47,724
Net cash provided by (used in) financing activities				44,674	43,872
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				(19,679)	7,151
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			15,164	34,782	15,164
CASH AND EQUIVALENTS AT END OF PERIOD	15,103	22,315		15,103	22,315
Non-Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	2,317	6,574		8,625	12,569
Net cash provided by (used in) operating activities				36,885	48,858
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment				(2,347)	(5,012)
Acquired business, net of cash acquired					(22,432)
Intercompany distributions				0	0
Proceeds from sale of assets				45	55
Net cash provided by (used in) investing activities				(2,302)	(27,389)
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				(4,073)	(5,733)
Change in short-term borrowings				2,157	(3,331)
Intercompany debt					23,000
Financing costs				0	0
Tax effect from exercise/vesting of equity awards, net				0	0
Dividend				0	0
Other, net				(44,885)	(47,724)
Net cash provided by (used in) financing activities				(46,801)	(29,788)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in discontinued operations				(478)	(764)
Effect of exchange rate changes on cash and equivalents				(138)	916
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT				(12,834)	(8,167)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			49,417	49,779	49,417
CASH AND EQUIVALENTS AT END OF PERIOD	36,945	41,250		36,945	41,250
Consolidation, Eliminations [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(5,063)	(13,186)		(17,795)	(25,240)
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	0
Payments of long-term debt				0	0
Change in short-term borrowings				0
Intercompany debt					0
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