Note 2 - Sale of Subsidiary	3 Months Ended
Apr. 30, 2024
Notes to Financial Statements
Sale of Subsidiaries and Subsequent Events [Text Block]	2. Sale of Subsidiary On August 21, 2023, the Company sold Klein pursuant to a Stock Purchase Agreement (the “SPA”) with General Oceans AS (“the Buyer"). In connection with the SPA, the Company granted the Buyer a license to its Spectral Ai software suite (“Spectral Ai”). The license is exclusive to the Buyer as it relates to side scan sonar. The Company and the Buyer also entered into a collaboration agreement for the further development of Spectral Ai and potentially other software projects. The foregoing transactions contemplated by the SPA are referred to as the “Sale of Klein”. The aggregate consideration to the Company consisted of a cash payment of $11.5 million, resulting in a gain of approximately $2.3 million. The SPA contained customary representation and warranties. On August 22, 2023, following the closing of the Sale of Klein, all outstanding amounts due and owed, including principal, interest, and other charges, under the Loan (as defined below) were repaid in full and the Loan was terminated, and all liens and security interests granted thereunder were released and terminated (see Note 10 - "Notes Payable" for additional details).

Note 2 - Sale of Subsidiary

3 Months Ended

Apr. 30, 2024

Sale of Subsidiaries and Subsequent Events [Text Block]

2. Sale of Subsidiary

On August 21, 2023, the Company sold Klein pursuant to a Stock Purchase Agreement (the “SPA”) with General Oceans AS (“the Buyer"). In connection with the SPA, the Company granted the Buyer a license to its Spectral Ai software suite (“Spectral Ai”). The license is exclusive to the Buyer as it relates to side scan sonar. The Company and the Buyer also entered into a collaboration agreement for the further development of Spectral Ai and potentially other software projects. The foregoing transactions contemplated by the SPA are referred to as the “Sale of Klein”. The aggregate consideration to the Company consisted of a cash payment of $11.5 million, resulting in a gain of approximately $2.3 million. The SPA contained customary representation and warranties.

On August 22, 2023, following the closing of the Sale of Klein, all outstanding amounts due and owed, including principal, interest, and other charges, under the Loan (as defined below) were repaid in full and the Loan was terminated, and all liens and security interests granted thereunder were released and terminated (see Note 10 - "Notes Payable" for additional details).