Note 5 - Line of Credit and Long-term Debt - Summary of Line of Credit and Long-term Debt (Details) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Mar. 31, 2025 |
|---|---|---|
| Short-term debt - bank | $ 370 | $ 760 |
| Unamortized debt issuance costs | (62) | (68) |
| Less current maturities | (7,358) | (6,646) |
| Total long-term debt - related party | 1,000 | 1,000 |
| Line of Credit, Related Party [Member] | ||
| Long-term debt | 4,200 | 3,000 |
| Long-term Debt, Excluding Related Party Debt [Member] | ||
| Long-term debt | 2,850 | 2,954 |
| Unsecured Subordinated Loan [Member] | ||
| Long-term debt | $ 1,000 | $ 1,000 |
| X | ||||||||||
- Definition Amount of debt and lease obligation, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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