Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenue	$ 18,803	$ 13,178	$ 52,039	$ 36,960
Cost of sales	(11,388)	(6,211)	(31,568)	(20,822)
Operating expenses	(4,520)	(3,831)	(13,296)	(11,245)
General and administrative expenses	(1,134)	(1,151)	(4,240)	(3,814)
Gain on sale of timberland	44	0	12,547	226
Income from operations	1,805	1,985	15,482	1,305
Interest expense, net	(1,179)	(953)	(3,306)	(2,358)
Income (loss) before income taxes	626	1,032	12,176	(1,053)
Income tax expense	(46)	(116)	(105)	(166)
Net income (loss)	580	916	12,071	(1,219)
Net and comprehensive (income) loss attributable to noncontrolling interests - ORM Timber Funds	1,078	1,054	(6,885)	2,590
Net and comprehensive income attributable to unitholders	1,658	1,970	5,186	1,371
Allocable to general partners	23	27	72	19
Allocable to limited partners	1,635	1,943	5,114	1,352
Net and comprehensive income attributable to unitholders	$ 1,658	$ 1,970	$ 5,186	$ 1,371
Basic and diluted earnings per unit attributable to unit holders (in dollars per unit)	$ 0.38	$ 0.45	$ 1.17	$ 0.30
Basic and diluted weighted average units outstanding (units)	4,324	4,312	4,325	4,312
Distributions per unit (in dollars per unit)	$ 0.7	$ 0.7	$ 2.10	$ 2.1