Note 12 - Joint Venture and Noncontrolling Interests (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jun. 01, 2023
Assets	$ 155,711	$ 122,966
Net Income (Loss) Attributable to Noncontrolling Interest	2,740	0
Redeemable Noncontrolling Interest, Equity, Carrying Amount	6,266	0
Gulf Insulation Group [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	2,700	0
Redeemable Noncontrolling Interest, Equity, Carrying Amount		$ 0
Noncontrolling Interest, Increase From Initial Contribution	1,000
Noncontrolling Interest, Increase from Business Combination	2,500
Related Party [Member]
Financing Receivable, after Allowance for Credit Loss			$ 4,200
Assets	27,300
Liabilities	$ 19,800
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