Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Income Statement [Abstract]
Net sales and revenue	$ 175,625	$ 174,877	$ 492,528	$ 484,263
Cost of sales (includes $19,437 and $22,739 with related parties for the three months ended October 31, 2025 and 2024, respectively, and $73,290 and $81,726 with related parties for the nine months ended October 31, 2025 and 2024, respectively.)	139,493	135,196	427,735	410,358
Gross profit	36,132	39,681	64,793	73,905
Selling, general and administrative expenses	(8,214)	(8,426)	(20,359)	(20,977)
Equity in income of unconsolidated affiliates	4,388	3,621	6,285	7,086
Interest and other income, net	3,151	4,629	10,461	14,950
Income before income taxes	35,457	39,505	61,180	74,964
Provision for income taxes	(7,988)	(9,402)	(13,711)	(17,581)
Net income	27,469	30,103	47,469	57,383
Net income attributable to noncontrolling interests	(4,056)	(5,603)	(8,267)	(10,314)
Net income attributable to REX common shareholders	$ 23,413	$ 24,500	$ 39,202	$ 47,069
Weighted average shares outstanding – basic (in Shares)	33,002,000	35,189,000	33,267,000	35,100,000
Basic net income per share attributable to REX common shareholders (in Dollars per share)	$ 0.71	$ 0.7	$ 1.18	$ 1.34
Weighted average shares outstanding – diluted (in Shares)	33,002,000	35,445,000	33,267,000	35,346,000
Diluted net income per share attributable to REX common shareholders (in Dollars per share)	$ 0.71	$ 0.69	$ 1.18	$ 1.33