Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Net income	$ 10,992	$ 12,071
Adjustments to reconcile net income to net cash provided by operating activities
Depletion	21,104	12,737
Equity-based compensation	924	950
Depreciation and amortization	439	393
Deferred taxes and other	57	10
Cost of land sold	1,407	1,970
Gain on sale of timberland - Funds	0	(12,547)
Gain on disposal of property and equipment	(9)	(3)
Cash flows from changes in operating accounts
Accounts receivable, net	772	354
Prepaid expenses, contract assets, and other assets	(5,656)	5,673
Real estate project expenditures	(2,182)	(6,496)
Accounts payable and accrued liabilities	(489)	(1,452)
Deferred revenue	80	(164)
Environmental remediation accruals	2,900	0
Environmental remediation payments	(1,145)	(6,182)
Other current and long-term liabilities	740	94
Net cash provided by operating activities	29,934	7,408
Cash flows from investing activities
Reforestation and roads	(2,534)	(1,665)
Capital expenditures	(571)	(162)
Proceeds from sale of property and equipment	10	30
Investment in unconsolidated real estate joint venture	0	(250)
Acquisitions of timberland - Partnership	(6,355)	(4,951)
Acquisitions of timberland - Funds	(108,364)	0
Proceeds from sale of timberland - Funds	0	26,590
Net cash provided by (used in) investing activities	(117,814)	19,592
Cash flows from financing activities
Line of credit borrowings	27,300	23,000
Line of credit repayments	(7,800)	(8,000)
Repayment of long-term debt	(92)	(5,088)
Debt issuance costs	0	(104)
Proceeds from unit issuances - distribution reinvestment plan	128	4
Unit repurchases	(939)	(648)
Payroll taxes paid on unit net settlements	(102)	(94)
Cash distributions to unitholders	(9,591)	(9,168)
Cash distributions - ORM Timber Funds, net of distributions to Partnership	(11,217)	(26,359)
Capital call - ORM Timber Funds, net of Partnership contribution	92,280	825
Net cash provided by (used in) financing activities	89,967	(25,632)
Net increase in cash and restricted cash	2,087	1,368
Cash and restricted cash at beginning of period	5,284	2,937
Cash and restricted cash at end of period	$ 7,371	$ 4,305