Note 16 - Noncontrolling Interest (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023	Apr. 30, 2024	Jan. 31, 2024	Jun. 01, 2023
Assets	$ 160,749		$ 160,749		$ 155,740	$ 155,711
Net Income (Loss) Attributable to Noncontrolling Interest	962	$ 1,429	2,303	$ 1,577
Redeemable Noncontrolling Interest, Equity, Carrying Amount	8,952		8,952			6,266
Gulf Insulation Group [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	1,000	$ 1,400	2,300	$ 1,600
Redeemable Noncontrolling Interest, Equity, Carrying Amount	9,000		9,000			$ 6,300
Noncontrolling Interest, Increase from Business Combination			400
Related Party [Member]
Assets	31,800		31,800
Liabilities	$ 18,500		$ 18,500
Joint Venture [Member]
Subsidiary, Ownership Percentage, Parent							60.00%
Joint Venture [Member] | Gulf Insulation Group [Member]
Subsidiary, Ownership Percentage, Parent							40.00%