Balance Sheet of Partnership Co-Investments - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended					3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Fund I	Sep. 30, 2013 Fund II	Sep. 30, 2013 Fund III	Dec. 31, 2012 Fund III Northern California acre	Sep. 30, 2013 ORM Timber Funds	Sep. 30, 2012 ORM Timber Funds	Sep. 30, 2013 ORM Timber Funds	Sep. 30, 2012 ORM Timber Funds
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Operating term for Fund					10 years	10 years	10 years
Termination agreement date					2017-08	2021-03
Termination agreement description							Fund III terminating on the tenth anniversary of the completion of its drawdown period. Fund III's drawdown period will end at the earlier of placement of all committed capital or July 31, 2015.
Area of timberland acquired								19,000
Payment to acquire timberland								$ 45,100,000
Deployment of committed capital, percentage								25.00%
Pope Resources and ORMLLC combined ownership percentage					20.00%	20.00%	5.00%
Funds' income (losses) from operation	(530,000)	3,412,000	10,087,000	(4,668,000)					134,000	(306,000)	2,363,000	(8,000)
Management fees paid to ORMLLC									$ 701,000	$ 515,000	$ 2,100,000	$ 1,600,000