CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total Shareholders' Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Noncontrolling Interest
Balance at beginning at Dec. 31, 2023	$ 846,954	$ 826,007	$ 86	$ 260,990	$ 564,931	$ 20,947
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,757	2,549			2,549	208
Repurchase of treasury shares by IOR	(587)					(587)
Adjustment to noncontrolling interest	0	299		299		(299)
Balance at ending at Mar. 31, 2024	849,124	828,855	86	261,289	567,480	20,269
Balance at beginning at Dec. 31, 2024	852,811	832,278	86	261,399	570,793	20,533
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,781	4,618			4,618	163
Repurchase of treasury shares by IOR	(679)					(679)
Adjustment to noncontrolling interest	0	363		363		(363)
Balance at ending at Mar. 31, 2025	$ 856,913	$ 837,259	$ 86	$ 261,762	$ 575,411	$ 19,654