Note 12 - Joint Venture and Noncontrolling Interests (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jun. 01, 2023
Assets	$ 165,241	$ 155,711
Net Income (Loss) Attributable to Noncontrolling Interest	4,108	2,740
Redeemable Noncontrolling Interest, Equity, Carrying Amount	10,967	6,266
Gulf Insulation Group [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	4,100	2,700
Redeemable Noncontrolling Interest, Equity, Carrying Amount	11,000	$ 6,300
Noncontrolling Interest, Increase From Initial Contribution	4,100
Noncontrolling Interest, Increase from Business Combination	600
Related Party [Member]
Financing Receivable, after Allowance for Credit Loss			$ 4,200
Assets	39,100
Liabilities	$ 22,100
Gulf Insulation Group [Member] \| Related Party [Member]
Notes Payable			$ 2,800
Joint Venture [Member]
Subsidiary, Ownership Percentage, Parent			60.00%
Joint Venture [Member] \| Gulf Insulation Group [Member]
Subsidiary, Ownership Percentage, Parent			40.00%
Property, Plant, and Equipment, Fair Value Disclosure			$ 6,800

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