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Note 15 - Noncontrolling Interest (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Jan. 31, 2025	Jun. 01, 2023
Assets	$ 216,985		$ 216,985		$ 165,241
Net Income (Loss) Attributable to Noncontrolling Interest	1,599	$ 962	2,913	$ 2,303
Redeemable Noncontrolling Interest, Equity, Carrying Amount	14,235		14,235		10,967
Gulf Insulation Group [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	1,600	$ 1,000	2,900	$ 2,300
Redeemable Noncontrolling Interest, Equity, Carrying Amount	14,200		14,200		11,000
Noncontrolling Interest, Adjustments to Redeemable Noncontrolling interest			400
Related Party [Member]
Assets	44,800		44,800		39,100
Liabilities	$ 21,400		$ 21,400		$ 22,100
Joint Venture [Member]
Subsidiary, Ownership Percentage, Parent						60.00%
Joint Venture [Member] | Gulf Insulation Group [Member]
Subsidiary, Ownership Percentage, Parent						40.00%

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The increase (decrease) in the value of the redeemable noncontrolling interest.

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