Guarantor Financial Statements (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidating Statement of Cash Flows
Net cash provided (used) by Operating activities	$ 48,465	$ 81,136
Investing activities
Purchase of plant, equipment and timberlands	(45,027)	(44,642)
Proceeds from disposals plant, equipment and timberlands, net	8,875	4,442
Repayments from (advances of) intercompany loans, net		0
Other	(150)
Total investing activities	(36,302)	(40,200)
Financing activities
Net repayments of indebtedness	(8,000)	(798)
Payments of note offerings costs	(102)
Payment of dividends to shareholders	(11,696)	(12,578)
Repurchases of common stock	(4,060)	(26,251)
(Repayments) borrowings of intercompany loans, net		(798)
Proceeds from stock options exercised and other	1,461	132
Total financing activities	(22,397)	(39,495)
Effect of exchange rate on cash	279	1,022
Net increase (decrease) in cash	(9,955)	2,463
Cash and cash equivalents at the beginning of period	38,277	95,788
Cash and cash equivalents at the end of period	28,322	98,251
Parent Company [Member]
Condensed Consolidating Statement of Cash Flows
Net cash provided (used) by Operating activities	9,196	78,151
Investing activities
Purchase of plant, equipment and timberlands	(19,035)	(19,985)
Proceeds from disposals plant, equipment and timberlands, net	654	597
Repayments from (advances of) intercompany loans, net	13,397	(10,133)
Other	(150)
Total investing activities	(5,134)	(29,521)
Financing activities
Net repayments of indebtedness	(8,000)
Payments of note offerings costs	(102)
Payment of dividends to shareholders	(11,696)	(12,578)
Repurchases of common stock	(4,060)	(26,251)
(Repayments) borrowings of intercompany loans, net	18,510	(2,050)
Proceeds from stock options exercised and other	1,434	132
Total financing activities	(3,914)	(40,747)
Net increase (decrease) in cash	148	7,883
Cash and cash equivalents at the beginning of period	3,007	61,953
Cash and cash equivalents at the end of period	3,155	69,836
Guarantors [Member]
Condensed Consolidating Statement of Cash Flows
Net cash provided (used) by Operating activities	4,971	(29,590)
Investing activities
Purchase of plant, equipment and timberlands	(281)	(65)
Proceeds from disposals plant, equipment and timberlands, net	8,185	3,821
Repayments from (advances of) intercompany loans, net	(2,722)	29,933
Total investing activities	5,182	33,689
Financing activities
(Repayments) borrowings of intercompany loans, net	(7,400)
Payment of inter- company dividend		(3,300)
Total financing activities	(7,400)	(3,300)
Net increase (decrease) in cash	2,753	799
Cash and cash equivalents at the beginning of period	2,894	91
Cash and cash equivalents at the end of period	5,647	890
Non Guarantors [Member]
Condensed Consolidating Statement of Cash Flows
Net cash provided (used) by Operating activities	34,298	35,875
Investing activities
Purchase of plant, equipment and timberlands	(25,711)	(24,592)
Proceeds from disposals plant, equipment and timberlands, net	36	24
Repayments from (advances of) intercompany loans, net	(514)
Total investing activities	(26,189)	(24,568)
Financing activities
Net repayments of indebtedness		(798)
(Repayments) borrowings of intercompany loans, net	(21,271)	(17,750)
Proceeds from stock options exercised and other	27
Total financing activities	(21,244)	(18,548)
Effect of exchange rate on cash	279	1,022
Net increase (decrease) in cash	(12,856)	(6,219)
Cash and cash equivalents at the beginning of period	32,376	33,744
Cash and cash equivalents at the end of period	19,520	27,525
Adjustments/ Eliminations [Member]
Condensed Consolidating Statement of Cash Flows
Net cash provided (used) by Operating activities		(3,300)
Investing activities
Repayments from (advances of) intercompany loans, net	(10,161)	(19,800)
Total investing activities	(10,161)	(19,800)
Financing activities
(Repayments) borrowings of intercompany loans, net	10,161	19,800
Payment of inter- company dividend		3,300
Total financing activities	$ 10,161	$ 23,100