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Note 3 - Inventories (Tables) | 12 Months Ended
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Mar. 31, 2013
Schedule of Inventory, Current [Table Text Block] |
|  | Year Ended March 31, |
|  | 2013 |  |  | 2012 |
Aircraft parts and supplies |  | $ | 119,638 |  |  | $ | 119,638 |
Ground equipment manufacturing: |  |  |  |  |  |  |  |
Raw materials |  |  | 5,317,088 |  |  |  | 9,127,113 |
Work in process |  |  | 1,305,029 |  |  |  | 4,363,789 |
Finished goods |  |  | 2,230,100 |  |  |  | 613,348 |
Total inventories |  |  | 8,971,855 |  |  |  | 14,223,888 |
Reserves |  |  | (790,155 | ) |  |  | (772,918 | )
Total, net of reserves |  | $ | 8,181,700 |  |  | $ | 13,450,970 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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Balance Type: | na
Period Type: | duration