Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Timber and roads, accumulated depletion	$ 82,094	$ 71,955
Buildings and equipment, accumulated depreciation	$ 6,012	$ 6,203
General partners' capital, units issued	60	60
General partners' capital, units outstanding	60	60
Limited partners' capital, units issued	4,299	4,269
Limited partners' capital, units outstanding	4,299	4,269