Consolidated Condensed Balance Sheets (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash	$ 4,279	$ 16,985
Short-term investments	55,438	63,077
Receivables, net	16,006	10,668
Inventories	28,757	28,928
Deferred tax assets	10,507	10,507
Other assets	7,939	7,932
Total current assets	122,926	138,097
Property, plant and equipment, net	58,333	58,050
Timber and timberlands, net	462,745	464,467
Deferred tax assets	41,702	43,292
Other assets	14,529	14,991
Total assets	700,235	718,897
Current liabilities:
Current installments on long-term debt	9,013	8,413
Accounts payable and accrued liabilities	59,007	55,174
Total current liabilities	68,020	63,587
Long-term debt	320,748	349,163
Liability for pensions and other postretirement employee benefits	143,638	145,047
Other long-term obligations	24,021	22,457
Stockholders’ equity	143,808	138,643
Total liabilities and stockholders' equity	700,235	718,897
Shares outstanding (in thousands)	40,490	40,389
Stockholders' equity per common share (in dollars per share)	$ 3.55	$ 3.43
Working capital	$ 54,906	$ 74,510
Current ratio	1.8	2.2