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Note 5 - Accrued Expenses | 12 Months Ended
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Mar. 31, 2013
Accounts Payable and Accrued Liabilities Disclosure [Text Block] | 5. ACCRUED EXPENSES Accrued expenses consisted of the following:
|  | March 31, |
|  | 2013 |  |  | 2012 |
Salaries, wages and related items |  | $ | 1,272,183 |  |  | $ | 1,188,016 |
Profit sharing |  |  | 384,999 |  |  |  | 262,599 |
Health insurance |  |  | 149,403 |  |  |  | 191,397 |
Warranty reserves |  |  | 208,745 |  |  |  | 253,225 |
Other |  |  | 104,670 |  |  |  | 71,602 |
Total |  | $ | 2,120,000 |  |  | $ | 1,966,839 |

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 24 -Article 5 + Details
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