Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 280,596	$ 78,603
Accounts receivable, less allowance for doubtful accounts of $417 and $399	100,359	95,008
Inventory (Note 10)	127,966	121,998
Prepaid and other current assets	57,353	48,893
Total current assets	566,274	344,502
TIMBER AND TIMBERLANDS, NET OF DEPLETION AND AMORTIZATION	1,573,309	1,503,711
PROPERTY, PLANT AND EQUIPMENT
Land	27,383	26,917
Buildings	147,445	140,269
Machinery and equipment	1,444,012	1,355,897
Construction in progress	268,459	96,097
Total property, plant and equipment, gross	1,887,299	1,619,180
Less—accumulated depreciation	(1,180,261)	(1,157,628)
Total property, plant and equipment, net	707,038	461,552
INVESTMENT IN JOINT VENTURE (Note 5)	72,419	69,219
OTHER ASSETS	203,911	190,364
TOTAL ASSETS	3,122,951	2,569,348
CURRENT LIABILITIES
Accounts payable	70,381	72,873
Current maturities of long-term debt (Note 11)	150,000	28,110
Accrued taxes	13,824	5,223
Accrued payroll and benefits	28,068	26,846
Accrued interest	7,956	7,044
Accrued customer incentives	10,849	10,369
Other current liabilities	18,640	17,855
Current liabilities for dispositions and discontinued operations (Note 15)	8,105	9,931
Total current liabilities	307,823	178,251
LONG-TERM DEBT (Note 11)	1,120,052	819,229
NON-CURRENT LIABILITIES FOR DISPOSITIONS AND DISCONTINUED OPERATIONS (Note 15)	73,590	80,893
PENSION AND OTHER POSTRETIREMENT BENEFITS (Note 20)	159,582	140,623
OTHER NON-CURRENT LIABILITIES	23,900	27,279
COMMITMENTS AND CONTINGENCIES (Notes 16, 17 and 18)
SHAREHOLDERS’ EQUITY
Common Shares, 480,000,000 and 240,000,000 shares authorized, 123,332,444 and 122,035,177 shares issued and outstanding	670,749	630,286
Retained earnings	876,634	806,235
Accumulated other comprehensive loss	(109,379)	(113,448)
TOTAL SHAREHOLDERS' EQUITY	1,438,004	1,323,073
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,122,951	$ 2,569,348