CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Detail) - Summary of consolidated cash flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 9,048	$ 4,872	$ 13,563	$ (10,809)
Net cash provided by (used in) operating activities			30,347	13,055
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(17,490)	(23,237)	(57,695)	(64,974)
Acquired business, net of cash acquired			(22,432)	(855)
Intercompany distributions			0	0
Funds restricted for capital projects			0	3,875
Proceeds from sale of assets			281	1,333
Net cash provided by (used in) investing activities			(79,846)	(60,621)
Increase in equipment lease deposits				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of ESOP shares			0	(15,674)
Exercise of stock options			0	20
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury			(5,670)	0
Proceeds from issuance of long-term debt			4,000	640,963
Payments of long-term debt			(14,563)	(495,209)
Decrease in short-term borrowings			(1,262)	12,730
Intercompany debt			0	0
Financing costs			(97)	(21,343)
Tax effect from exercise/vesting of equity awards, net			834	2,334
Dividend			(3,564)
Other, net			67	22
Net cash provided by (used in) financing activities			(20,255)	123,843
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities			(1,690)	(829)
Net cash used in discontinued operations			(1,690)	(829)
Effect of exchange rate changes on cash and equivalents			327	1,304
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT			(71,117)	76,752
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			243,029	169,802
CASH AND EQUIVALENTS AT END OF PERIOD	171,912	246,554	171,912	246,554
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	9,794	4,349	14,561	(11,332)
Net cash provided by (used in) operating activities			(52,122)	21,279
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment			(91)	(321)
Acquired business, net of cash acquired			0	0
Intercompany distributions			10,000	10,000
Funds restricted for capital projects				0
Proceeds from sale of assets			0	0
Net cash provided by (used in) investing activities			9,909	9,679
Increase in equipment lease deposits				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of ESOP shares				(15,673)
Exercise of stock options				20
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury			(5,670)
Proceeds from issuance of long-term debt			0	565,673
Payments of long-term debt			(1,219)	(469)
Decrease in short-term borrowings			0	0
Intercompany debt			(23,000)	(468,372)
Financing costs			(65)	(14,354)
Tax effect from exercise/vesting of equity awards, net			834	2,334
Dividend			(3,564)
Other, net			67	22
Net cash provided by (used in) financing activities			(32,617)	69,181
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities			0
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			(74,830)	100,139
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			178,448	74,600
CASH AND EQUIVALENTS AT END OF PERIOD	103,616	174,739	103,616	174,739
Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	14,252	12,101	27,177	32,359
Net cash provided by (used in) operating activities			48,597	35,824
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment			(51,582)	(36,400)
Acquired business, net of cash acquired			(22,432)	(1,066)
Intercompany distributions			(10,000)	(10,000)
Funds restricted for capital projects				3,875
Proceeds from sale of assets			183	0
Net cash provided by (used in) investing activities			(83,831)	(43,591)
Increase in equipment lease deposits				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of ESOP shares				0
Exercise of stock options				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury			0
Proceeds from issuance of long-term debt			491,372	0
Payments of long-term debt			(4,101)	(30,850)
Decrease in short-term borrowings			0	0
Intercompany debt			0	0
Financing costs			0	0
Tax effect from exercise/vesting of equity awards, net			0	0
Dividend			(219,516)
Other, net			(221,132)	11,415
Net cash provided by (used in) financing activities			46,623	(19,435)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities			0
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			11,389	(27,202)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			15,164	57,113
CASH AND EQUIVALENTS AT END OF PERIOD	26,554	29,911	26,554	29,911
Non-Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	14,231	6,875	27,053	(39)
Net cash provided by (used in) operating activities			33,874	(44,048)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment			(6,022)	(28,253)
Acquired business, net of cash acquired			0	211
Intercompany distributions			0	0
Funds restricted for capital projects				0
Proceeds from sale of assets			98	1,333
Net cash provided by (used in) investing activities			(5,924)	(26,709)
Increase in equipment lease deposits				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of ESOP shares				(1)
Exercise of stock options				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury			0
Proceeds from issuance of long-term debt			4,000	75,290
Payments of long-term debt			(9,243)	(463,890)
Decrease in short-term borrowings			(1,262)	12,730
Intercompany debt			(468,372)	468,372
Financing costs			(32)	(6,989)
Tax effect from exercise/vesting of equity awards, net			0	0
Dividend			219,516
Other, net			221,132	(11,415)
Net cash provided by (used in) financing activities			(34,261)	74,097
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities			(1,690)
Net cash used in discontinued operations			(1,690)	(829)
Effect of exchange rate changes on cash and equivalents			325	1,304
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT			(7,676)	3,815
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			49,417	38,089
CASH AND EQUIVALENTS AT END OF PERIOD	41,742	41,904	41,742	41,904
Consolidation, Eliminations [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(29,229)	(18,453)	(55,228)	(31,797)
Net cash provided by (used in) operating activities			(2)	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment			0	0
Acquired business, net of cash acquired			0	0
Intercompany distributions			0	0
Funds restricted for capital projects				0
Proceeds from sale of assets			0	0
Net cash provided by (used in) investing activities			0	0
Increase in equipment lease deposits				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of ESOP shares				0
Exercise of stock options				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury			0
Proceeds from issuance of long-term debt			(491,372)	0
Payments of long-term debt			0	0
Decrease in short-term borrowings			0	0
Intercompany debt			491,372	0
Financing costs			0	0
Tax effect from exercise/vesting of equity awards, net			0	0
Dividend			0
Other, net			0	0
Net cash provided by (used in) financing activities			0	0
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities			0
Net cash used in discontinued operations			0	0
Effect of exchange rate changes on cash and equivalents			2	0
NET INCREASE (DECREASE) IN CASH AND EQUIVALENT			0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			0	0
CASH AND EQUIVALENTS AT END OF PERIOD	$ 0	$ 0	$ 0	$ 0