CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ (44,306)	$ (176,841)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	26,196	31,215
Asset impairments and non-cash restructuring costs	971	40,190
Interest expense related to amortization of debt issue costs and debt discount	5,863	14,496
Stock-based compensation	923	2,037
Deferred income taxes	27	393
Net loss (gain) of unconsolidated joint ventures	6,069	(2,452)
Net gain on disposition of property, plant and equipment	(429)	(309)
Gain on convertible debt repayment	(2,025)	0
Decrease in trade receivables	23,245	24,394
Increase in inventories	(717)	(2,593)
Decrease in accounts payable and accrued liabilities	(15,043)	(12,564)
Other changes in operating assets and liabilities, net	7,270	1,085
Net cash provided by (used in) operating activities	8,044	(80,949)
Cash flows from investing activities:
Purchase of property, plant and equipment and payments for acquisitions	(11,832)	(14,643)
Proceeds from disposition of property, plant and equipment	1,093	413
Proceeds from sale of interests in joint ventures	8,636	0
Net decrease (increase) in long-term receivables and deposits	(501)	526
Net change in other assets	(1,013)	(751)
Net cash used in investing activities	(3,617)	(14,455)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	392,750
Payments on long-term debt	(17,441)	(338,044)
Employee stock purchases	284	403
Net cash provided by (used in) financing activities	(17,157)	55,109
Net decrease in cash and cash equivalents	(12,730)	(40,295)
Cash and cash equivalents, beginning of period	50,810	90,984
Cash and cash equivalents, end of period	$ 38,080	$ 50,689