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