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Note 15 - Segment Information (Detail) - Segment Data is Summarized as Follows: (USD $) | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Operating Revenues: |  |
Overnight Air Cargo | $ 49,850,693 | $ 48,344,211
Ground Equipment Sales: |  |
Operating Revenues | 40,294,093 | 32,089,800
Ground Support Services | 12,919,453 | 8,948,120
Total | 103,064,239 | 89,382,131
Operating Income (Loss): |  |
Operating Income (Loss) | 2,728,028 | 2,073,540
Capital Expenditures: |  |
Overnight Air Cargo | 20,016,194 | 19,874,129
Ground Equipment Sales | 35,011,452 | 28,071,008
Ground Support Services | 9,171,986 | 6,091,993
Total | 375,045 | 1,001,786
Depreciation and Amortization: |  |
Depreciation and Amortization | 532,770 | 364,215
Domestic [Member] |  |
Ground Equipment Sales: |  |
Operating Revenues | 32,515,374 | 23,363,587
International [Member] |  |
Ground Equipment Sales: |  |
Operating Revenues | 7,778,719 | 8,726,213
Overnight Air Cargo [Member] |  |
Operating Income (Loss): |  |
Operating Income (Loss) | 3,107,818 | 3,620,962
Capital Expenditures: |  |
Overnight Air Cargo | 147,205 | 636,539
Depreciation and Amortization: |  |
Depreciation and Amortization | 156,589 | 83,453
Ground Equipment Sales [Member] |  |
Operating Income (Loss): |  |
Operating Income (Loss) | 888,506 | (625,225)
Capital Expenditures: |  |
Ground Equipment Sales | 139,075 | 63,260
Depreciation and Amortization: |  |
Depreciation and Amortization | 188,143 | 132,324
Ground Support Services [Member] |  |
Operating Income (Loss): |  |
Operating Income (Loss) | 871,287 | 700,082
Capital Expenditures: |  |
Ground Support Services | 38,982 | 284,337
Depreciation and Amortization: |  |
Depreciation and Amortization | 132,239 | 107,326
Corporate Division [Member] |  |
Operating Income (Loss): |  |
Operating Income (Loss) | (2,139,583) | (1,622,279)
Capital Expenditures: |  |
Corporate | 49,783 | 17,650
Depreciation and Amortization: |  |
Depreciation and Amortization | $ 55,799 | $ 41,112

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