CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Total Shareholders' Equity	Preferred Stock	Common Stock	Paid-in Capital	Retained Earnings	Noncontrolling Interest
Balance at beginning at Dec. 31, 2022	$ 812,168	$ 613,487	$ 1,801	$ 162	$ 62,090	$ 549,434	$ 198,681
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,522	3,103				3,103	1,419
Balance at ending at Jun. 30, 2023	816,690	616,590	1,801	162	62,090	552,537	200,100
Balance at beginning at Mar. 31, 2023	816,387	616,465	1,801	162	62,090	552,412	199,922
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	303	125				125	178
Balance at ending at Jun. 30, 2023	816,690	616,590	1,801	162	62,090	552,537	200,100
Balance at beginning at Dec. 31, 2023	816,511	617,003	1,801	162	61,638	553,402	199,508
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,793	2,918				2,918	875
Repurchase of treasury shares by IOR	(587)						(587)
Adjustment to noncontrolling interest	0	26			26		(26)
Balance at ending at Jun. 30, 2024	819,717	619,947	1,801	162	61,664	556,320	199,770
Balance at beginning at Mar. 31, 2024	818,226	618,780	1,801	162	61,664	555,153	199,446
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,491	1,167				1,167	324
Balance at ending at Jun. 30, 2024	$ 819,717	$ 619,947	$ 1,801	$ 162	$ 61,664	$ 556,320	$ 199,770