CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 7,137	$ (62,248)	$ (229,921)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	52,317	51,481	64,230
Interest expense related to amortization of debt issue costs and debt discount	5,841	14,184	20,069
Stock-based compensation	1,703	1,737	3,658
Deferred income taxes	698	198	(34)
Net gain on disposition of property, plant and equipment	(649)	(538)	(329)
Loss (gain) on sale of discontinued operations, net of income taxes	55	(267)	0
Gain on convertible debt repayments	(35)	(2,479)	0
Asset impairments and non-cash restructuring costs	0	13,166	86,702
Net loss (gain) of unconsolidated joint ventures	0	9,314	(3,990)
Increase in trade receivables	(5,035)	(9,792)	(1,986)
Decrease in inventories	2,221	2,954	3,233
Increase (decrease) in accounts payable and accrued liabilities	(4,218)	27,443	9,336
Other changes in operating assets and liabilities, net	(1,472)	1,016	(2,682)
Net cash provided by (used in) operating activities	58,563	46,169	(51,714)
Cash flows from investing activities:
Payments for acquisitions	(43,250)	(996)	(2,466)
Purchase of property, plant and equipment	(29,119)	(26,447)	(27,381)
Proceeds from disposition of property, plant and equipment	791	1,261	556
Proceeds from sale of discontinued operations	4,813	2,000	0
Proceeds from sale of interests in joint ventures	0	18,522	0
Net change in other assets	(1,608)	(748)	(381)
Net cash used in investing activities	(68,373)	(6,408)	(29,672)
Cash flows from financing activities:
Net proceeds from issuance of common stock	77,957	0	0
Net proceeds from issuance of long-term debt	0	0	392,942
Payments on long-term debt	(47,355)	(36,334)	(352,449)
Debt issue costs	0	(1,090)	0
Employee stock purchases	742	635	719
Net cash provided by (used in) financing activities	31,344	(36,789)	41,212
Net increase (decrease) in cash and cash equivalents	21,534	2,972	(40,174)
Cash and cash equivalents, beginning of year	53,782	50,810	90,984
Cash and cash equivalents, end of year	75,316	53,782	50,810
Supplemental schedule of non-cash investing and financing activities:
Exchange of convertible senior subordinated notes	0	49,791	0
Increase in accrued liabilities for acquisition-related commitment	0	1,467	0
Supplemental disclosure of cash flow information:
Cash paid for interest	37,100	38,809	106,925
Cash paid for income taxes	$ 2,537	$ 1,391	$ 3,370