Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities
Net income (loss)	$ 32,953	$ 39,166
Adjustments to reconcile to net cash provided by operations:
Depreciation, depletion and amortization	51,779	48,802
Amortization of debt issue costs and original issue discount	2,001	2,098
Pension expense, net of unfunded benefits paid	7,671	6,422
Deferred income tax provision (benefit)	13,111	(12,755)
Gains on dispositions of plant, equipment and timberlands, net	(3,902)	(318)
Share-based compensation	4,301	4,333
Cellulosic biofuel and alternative fuel mixture credits	17,833	54,880
Change in operating assets and liabilities
Accounts receivable	(16,292)	(18,606)
Inventories	(7,136)	1,358
Prepaid expenses and other current assets	(9,654)	(19,012)
Accounts payable	4,932	20,731
Accruals and other current liabilities	(7,630)	(5,893)
Other	(8,831)	2,174
Net cash provided by operating activities	81,136	123,380
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(44,642)	(23,269)
Proceeds from disposals of plant, equipment and timberlands, net	4,442	333
Acquisition of Concert Industries Corp., net of cash acquired		(229,080)
Net cash used by investing activities	(40,200)	(252,016)
Financing activities
Proceeds from $100 million 7 1/8% note offering, net of original issue discount		95,000
Payments of note offering and credit facility costs		(5,297)
Net borrowings repayments of short term debt	(798)	(2,979)
Repayment of 2011 Term Loan		(14,000)
Payments of dividends	(12,578)	(12,556)
Repurchase of common stock	(26,251)
Proceeds from stock options exercised and other	132	147
Net cash provided (used) by financing activities	(39,495)	60,315
Effect of exchange rate changes on cash	1,022	(3,766)
Net increase (decrease) in cash and cash equivalents	2,463	(72,087)
Cash and cash equivalents at the beginning of period	95,788	135,420
Cash and cash equivalents at the end of period	98,251	63,333
Cash paid (received) for
Interest	11,818	11,788
Income taxes	$ (9,447)	$ (43,004)