CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 6,460	$ 4,882	$ 4,047
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	10,390	10,975	11,462
Deferred income taxes	(1,768)	1,496	1,813
Equity in loss of joint ventures	11,359	11,937	5,721
Gain on sale of equipment and property	(209)	(14)	(904)
Stock-based compensation	1,957	1,738	1,569
Net changes in operating assets and liabilities:
Accounts receivable	(306)	120	(373)
Deferred costs and other assets	964	(499)	(1,972)
Accounts payable and accrued liabilities	(795)	3,028	(276)
Income taxes payable and receivable	948	(355)	1,121
Other long-term liabilities	(14)	(337)	130
Net cash provided by operating activities	28,986	32,971	22,338
Cash flows from investing activities:
Investments in properties	(51,194)	(11,217)	(27,615)
Investments in joint ventures	(16,372)	(46,693)	(21,578)
Return of capital from investments in joint ventures	17,176	9,210	20,770
Proceeds from sales of investments available for sale	0	0	4,317
Cash held in escrow	(455)	(63)	(45)
Proceeds from sale of assets	224	16	955
Net cash (used in) provided by investing activities	(50,621)	(48,747)	(23,196)
Cash flows from financing activities:
Contribution from noncontrolling interest	15,706	0	27,894
Distribution to noncontrolling interests	(3,227)	(3,190)	(11,472)
Repurchase of Company stock	0	(2,000)	0
Exercise of employee stock options	221	1,024	412
Net cash (used in) provided by financing activities	12,700	(4,166)	16,834
Net (decrease) increase in cash and cash equivalents	(8,935)	(19,942)	15,976
Cash and cash equivalents at beginning of year	157,555	177,497	161,521
Cash and cash equivalents at end of the year	148,620	157,555	177,497
Cash paid (received) during the year for:
Interest	2,971	4,165	2,893
Income taxes	$ 2,790	$ 927	$ (1,761)