Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 119,181	$ 196,556
Accounts receivable, net of allowance for doubtful accounts and customer deductions of $4,498 and $5,413 as of June 30, 2011 and December 31, 2010, respectively	331,249	293,159
Inventories	226,521	241,142
Prepaid expenses and other current assets	30,005	16,952
Federal and state income tax receivable	3,587
Deferred income taxes	31,745	50,232
Total current assets	742,288	798,041
Property, plant and equipment, net	1,401,516	1,337,986
Goodwill	53,603	38,854
Other intangible assets, net	16,932	10,975
Other long-term assets	44,842	38,418
Total assets	2,259,181	2,224,274
Current liabilities:
Short-term debt and current maturities of long-term debt	109,000	109,000
Capital lease obligations	694	670
Accounts payable	189,778	154,130
Dividends payable	20,258	15,351
Accrued interest	12,537	12,598
Federal and state income taxes payable		2,601
Accrued liabilities	93,468	111,208
Total current liabilities	425,735	405,558
Long-term liabilities:
Long-term debt	549,273	549,099
Capital lease obligations	21,479	21,832
Deferred income taxes	8,988	9,190
Pension and postretirement benefit plans	101,988	97,914
Cellulosic biofuel tax reserve	102,051	102,051
Other long-term liabilities	28,462	29,629
Total long-term liabilities	812,241	809,715
Stockholders' equity:
Common stock, par value $0.01 per share, 300,000,000 shares authorized, 101,561,038 and 102,308,231 shares issued as of June 30, 2011 and December 31, 2010, respectively	1,016	1,023
Additional paid in capital	331,301	362,248
Retained earnings	726,208	690,111
Accumulated other comprehensive income (loss), net of tax:
Unrealized gain on treasury locks, net	7,121	2,164
Unrealized loss on foreign currency exchange contracts	(405)	(607)
Unfunded employee benefit obligations	(44,036)	(45,938)
Total accumulated other comprehensive loss	(37,320)	(44,381)
Total stockholders' equity	1,021,205	1,009,001
Total liabilities and stockholders' equity	$ 2,259,181	$ 2,224,274