Note 16 - Noncontrolling Interest (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023	Apr. 30, 2024	Jan. 31, 2024	Jun. 01, 2023
Assets	$ 157,764		$ 157,764		$ 155,740	$ 155,711
Net Income (Loss) Attributable to Noncontrolling Interest	995	$ 148	1,341	$ 148
Redeemable Noncontrolling Interest, Equity, Carrying Amount	8,057		8,057			6,266
Gulf Insulation Group [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	1,000	$ 100	1,300	$ 100
Redeemable Noncontrolling Interest, Equity, Carrying Amount	8,100		8,100			$ 6,300
Noncontrolling Interest, Increase from Business Combination			500
Related Party [Member]
Financing Receivable, after Allowance for Credit Loss							$ 4,200
Assets	26,400		26,400
Liabilities	$ 15,500		$ 15,500
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