Note 7 - Segment Information (Detail) - Segment Data is Summarized as Follows: (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Revenues:
Overnight Air Cargo	$ 10,733,726	$ 10,826,899
Ground Equipment Sales:
Ground Equipment Sales	10,743,561	4,170,478
Ground Support Services	3,010,878	1,564,120
Total	24,488,165	16,561,497
Operating Income (Loss):
Operating Income/Loss	653,670	250,992
Capital Expenditures:
Overnight Air Cargo	4,460,394	4,584,346
Ground Equipment Sales	9,431,956	3,505,850
Ground Support Services	2,229,432	1,116,068
Depreciation and Amortization:
Depreciation and Amortization	104,007	53,916
Domestic [Member]
Ground Equipment Sales:
Ground Equipment Sales	9,164,417	2,280,460
International [Member]
Ground Equipment Sales:
Ground Equipment Sales	1,579,144	1,890,018
Overnight Air Cargo [Member]
Depreciation and Amortization:
Depreciation and Amortization	37,446	14,283
Ground Equipment Sales [Member]
Depreciation and Amortization:
Depreciation and Amortization	16,559	9,969
Ground Support Services [Member]
Depreciation and Amortization:
Depreciation and Amortization	33,452	19,638
Corporate [Member]
Depreciation and Amortization:
Depreciation and Amortization	16,550	10,026
Total [Member]
Depreciation and Amortization:
Depreciation and Amortization	104,007	53,916
Overnight Air Cargo [Member]
Capital Expenditures:
Overnight Air Cargo	32,902	372,836
Ground Equipment Sales	58,370	3,071
Ground Support Services [Member]
Capital Expenditures:
Ground Support Services		19,500
Corporate [Member]
Capital Expenditures:
Corporate	39,222
Total [Member]
Capital Expenditures:
Total	130,494	395,407
Overnight Air Cargo [Member]
Operating Income (Loss):
Operating Income/Loss	754,841	932,307
Ground Equipment Sales [Member]
Operating Income (Loss):
Operating Income/Loss	252,350	(310,856)
Ground Support Services [Member]
Operating Income (Loss):
Operating Income/Loss	222,420	38,665
Corporate [Member]
Operating Income (Loss):
Operating Income/Loss	(575,941)	(409,124)
Total [Member]
Operating Income (Loss):
Operating Income/Loss	$ 653,670	$ 250,992