Segment Information (Summary Of Information By Business Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Segment Revenues	$ 151,147	$ 122,542
Total consolidated revenues	139,253	112,384
Operating Income	20,272	6,033
Depreciation, depletion and amortization	6,867	5,788
Basis of Real Estate Sold	457	444
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	38,007	20,335
Depreciation, depletion and amortization	6,114	5,087
Resource [Member]
Segment Reporting Information [Line Items]
Segment Revenues	54,968	40,454
Elimination of intersegment revenues	(11,894)	(10,158)
Operating Income	15,525	8,669
Depreciation, depletion and amortization	4,592	3,218
Real Estate [Member]
Segment Reporting Information [Line Items]
Segment Revenues	4,635	8,164
Operating Income	3,083	6,312
Depreciation, depletion and amortization	13	9
Basis of Real Estate Sold	616	495
Wood Products [Member]
Segment Reporting Information [Line Items]
Segment Revenues	91,544	73,924
Operating Income	18,910	5,044
Depreciation, depletion and amortization	1,509	1,860
Eliminations and Adjustments [Member]
Segment Reporting Information [Line Items]
Operating Income	489	310
Basis of Real Estate Sold	(159)	(51)
Corporate [Member]
Segment Reporting Information [Line Items]
Operating Income	(17,735)	(14,302)
Depreciation, depletion and amortization	$ 753	$ 701