Note 11 - Legal Proceedings	6 Months Ended
Sep. 30, 2022
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 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. 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.

Note 11 - Legal Proceedings

6 Months Ended

Sep. 30, 2022

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 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. 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.