Note 11 - Legal Proceedings	12 Months Ended
Mar. 31, 2023
Notes to Financial Statements
Legal Matters and Contingencies [Text Block]	NOTE 11 — LEGAL PROCEEDINGS: On April 19, 2022, the US District Court for the District of Delaware granted judgment in favor of the Company in its trademark infringement lawsuit against air conditioning and heating products provider Emerson Quiet Kool and wholesaler Home Easy (the “defendants”). Among other things, the court order issues an injunction and directs the US Patent and Trademark Office to cancel the defendants’ existing and proposed “Emerson Quiet Kool” trademarks and prohibits defendants from registering or applying to register or using the same mark or any other mark or name containing the word “Emerson” going forward. The judgment also awards $6.5 million to the Company. The defendants have to date conditionally made payments, including certain advances and a portion of their liability, which are reflected as advanced deposits in the Consolidated Balance Sheets, in connection with ongoing negotiations among the parties. The aggregate amount of the payments is $4.1 million, which has been reduced by approximately $0.8 million of legal fees incurred in fiscal 2023, in pursuit of the advanced deposits. The judgement is presently on appeal to the US Court of Appeals for the Third Circuit. There is no guarantee that the Company will be able to collect the entire judgment or that a negotiated resolution regarding these matters will ever be agreed among the parties or, if agreed, how soon the parties will be able to do so. The Company is not currently a party to any other legal proceedings other than litigation matters, in most cases involving ordinary and routine claims incidental to its business. Management cannot estimate with certainty the Company’s ultimate legal and financial liability with respect to such pending litigation matters. However, management believes, based on its examination of such matters, that the Company’s ultimate liability will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Note 11 - Legal Proceedings

12 Months Ended

Mar. 31, 2023

Legal Matters and Contingencies [Text Block]

NOTE 11 — LEGAL PROCEEDINGS:

On April 19, 2022, the US District Court for the District of Delaware granted judgment in favor of the Company in its trademark infringement lawsuit against air conditioning and heating products provider Emerson Quiet Kool and wholesaler Home Easy (the “defendants”). Among other things, the court order issues an injunction and directs the US Patent and Trademark Office to cancel the defendants’ existing and proposed “Emerson Quiet Kool” trademarks and prohibits defendants from registering or applying to register or using the same mark or any other mark or name containing the word “Emerson” going forward. The judgment also awards $6.5 million to the Company. The defendants have to date conditionally made payments, including certain advances and a portion of their liability, which are reflected as advanced deposits in the Consolidated Balance Sheets, in connection with ongoing negotiations among the parties. The aggregate amount of the payments is $4.1 million, which has been reduced by approximately $0.8 million of legal fees incurred in fiscal 2023, in pursuit of the advanced deposits. The judgement is presently on appeal to the US Court of Appeals for the Third Circuit. There is no guarantee that the Company will be able to collect the entire judgment or that a negotiated resolution regarding these matters will ever be agreed among the parties or, if agreed, how soon the parties will be able to do so.

The Company is not currently a party to any other legal proceedings other than litigation matters, in most cases involving ordinary and routine claims incidental to its business. Management cannot estimate with certainty the Company’s ultimate legal and financial liability with respect to such pending litigation matters. However, management believes, based on its examination of such matters, that the Company’s ultimate liability will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.