Note 7 - Segment Information (Details) - Segment Data (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Operating Revenues:
Operating Revenues	$ 29,834,600	$ 26,703,268	$ 75,304,746	$ 72,353,493
Operating Income (Loss):
Operating Income/Loss	795,670	986,542	1,768,620	1,991,146
Capital Expenditures:
Capital Expenitures	123,248	71,907	267,523	292,513
Depreciation and Amortization:
Depreciation and Amortization	214,636	136,246	540,290	379,493
Overnight Air Cargo [Member]
Operating Revenues:
Operating Revenues	14,475,404	12,416,819	39,004,768	35,201,746
Operating Income (Loss):
Operating Income/Loss	497,552	707,561	1,734,768	2,326,295
Capital Expenditures:
Capital Expenitures	37,769	36,156	50,005	85,651
Depreciation and Amortization:
Depreciation and Amortization	42,478	38,815	127,310	114,705
Ground Equipment Sales [Member] | Domestic [Member]
Operating Revenues:
Operating Revenues	8,180,669	7,802,351	20,554,855	21,353,676
Ground Equipment Sales [Member] | International [Member]
Operating Revenues:
Operating Revenues	2,870,507	3,142,912	3,640,217	6,420,764
Ground Equipment Sales [Member]
Operating Revenues:
Operating Revenues	11,051,176	10,945,263	24,195,072	27,774,440
Operating Income (Loss):
Operating Income/Loss	1,208,623	441,346	1,667,536	582,089
Capital Expenditures:
Capital Expenitures	10,451	16,508	28,555	128,159
Depreciation and Amortization:
Depreciation and Amortization	127,191	51,617	274,725	122,546
Ground Support Services [Member]
Operating Revenues:
Operating Revenues	4,308,020	3,341,186	12,104,906	9,377,307
Operating Income (Loss):
Operating Income/Loss	253,834	407,954	811,449	630,244
Capital Expenditures:
Capital Expenitures	57,748	15,335	159,568	31,373
Depreciation and Amortization:
Depreciation and Amortization	31,929	32,820	98,223	99,737
Corporate Division [Member]
Operating Income (Loss):
Operating Income/Loss	(1,164,339)	(570,319)	(2,445,133)	(1,547,482)
Capital Expenditures:
Capital Expenitures	17,280	3,908	29,395	47,330
Depreciation and Amortization:
Depreciation and Amortization	$ 13,038	$ 12,994	$ 40,032	$ 42,505