Note 7 - Segment Information (Detail) - Segment Data is Summarized as Follows: (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues:
Overnight Air Cargo	$ 12,051,201	$ 12,339,606	$ 22,784,927	$ 23,166,505
Ground Equipment Sales:
Ground Equipment Sales	6,085,616	11,174,548	16,829,177	15,345,026
Ground Support Services	3,025,243	1,946,764	6,036,121	3,510,884
Total	21,162,060	25,460,918	45,650,225	42,022,415
Operating Income (Loss):
Operating Income/Loss	350,934	918,814	1,004,604	1,169,806
Capital Expenditures:
Overnight Air Cargo	4,939,237	4,838,168	9,399,631	9,422,514
Ground Equipment Sales	5,132,797	9,953,745	14,564,753	13,459,595
Ground Support Services	2,294,367	1,299,996	4,523,799	2,416,064
Total	90,112	210,302	220,606	605,709
Depreciation and Amortization:
Depreciation and Amortization	103,707	62,795	207,714	116,711
Domestic [Member]
Ground Equipment Sales:
Ground Equipment Sales	4,386,908	9,872,322	13,551,325	12,152,782
International [Member]
Ground Equipment Sales:
Ground Equipment Sales	1,698,708	1,302,226	3,277,852	3,192,244
Overnight Air Cargo [Member]
Operating Income (Loss):
Operating Income/Loss	863,893	981,071	1,618,734	1,913,378
Capital Expenditures:
Overnight Air Cargo	16,593	57,281	49,495	430,117
Depreciation and Amortization:
Depreciation and Amortization	38,444	14,207	75,890	28,490
Ground Equipment Sales [Member]
Operating Income (Loss):
Operating Income/Loss	(163,765)	218,442	140,743	(92,414)
Capital Expenditures:
Ground Equipment Sales	53,281	19,519	111,651	22,590
Depreciation and Amortization:
Depreciation and Amortization	18,837	10,439	35,396	20,408
Ground Support Services [Member]
Operating Income (Loss):
Operating Income/Loss	52,028	156,616	222,290	195,281
Capital Expenditures:
Ground Support Services	16,038	131,402	16,038	150,902
Depreciation and Amortization:
Depreciation and Amortization	33,465	31,172	66,917	50,810
Corporate Division [Member]
Operating Income (Loss):
Operating Income/Loss	(401,222)	(437,315)	(977,163)	(846,439)
Capital Expenditures:
Corporate	4,200	2,100	43,422	2,100
Depreciation and Amortization:
Depreciation and Amortization	$ 12,961	$ 6,977	$ 29,511	$ 17,003