Balance Sheet Of Partnership Co-Investments (Partnership's Consolidated Balance Sheet included Assets and Liabilities of Funds) (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Cash	$ 7,348	$ 9,523
Total current assets	26,440	37,480
Properties and equipment, net of accumulated depletion and depreciation (2015 - $33,495; 2014 - $26,738)	304,958	307,156
Other long-term assets	504	441
Total assets	331,902	345,077
Liabilities and equity:
Current liabilities	319	248
Long-term debt, net of current portion	84,787	84,872
Total liabilities, partners' capital and noncontrolling interests	331,902	345,077
ORM Timber Funds
Assets:
Cash	7,348	9,523
Other current assets	1,274	1,108
Total current assets	8,622	10,631
Properties and equipment, net of accumulated depletion and depreciation (2015 - $33,495; 2014 - $26,738)	223,254	230,123
Other long-term assets	140	156
Total assets	232,016	240,910
Liabilities and equity:
Current liabilities	2,203	1,891
Long-term debt, net of current portion	57,380	57,380
Total liabilities	59,583	59,271
Funds' equity	172,433	181,639
Total liabilities, partners' capital and noncontrolling interests	$ 232,016	$ 240,910