Note 8 - Segment Information (Details) - Segment Data (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues:
Operating Revenues	$ 34,624,726	$ 24,190,092	$ 56,403,263	$ 45,470,146
Operating Income (Loss):
Operating Income/Loss	2,596,622	752,492	2,695,446	972,950
Capital Expenditures:
Capital Expenitures	1,278,207	44,860	1,553,223	144,275
Depreciation and Amortization:
Depreciation and Amortization	222,631	181,353	439,171	325,654
Overnight Air Cargo [Member]
Operating Revenues:
Operating Revenues	11,971,392	12,121,175	23,652,334	24,529,364
Operating Income (Loss):
Operating Income/Loss	277,629	564,969	822,916	1,237,216
Capital Expenditures:
Capital Expenitures	49,759	12,236	88,339	12,236
Depreciation and Amortization:
Depreciation and Amortization	40,868	42,444	79,041	84,832
Ground Equipment Sales [Member] | Domestic [Member]
Operating Revenues:
Operating Revenues	10,159,358	7,373,315	14,633,297	12,374,186
Ground Equipment Sales [Member] | International [Member]
Operating Revenues:
Operating Revenues	7,791,823	534,018	8,629,817	769,710
Ground Equipment Sales [Member]
Operating Revenues:
Operating Revenues	17,951,181	7,907,333	23,263,114	13,143,896
Operating Income (Loss):
Operating Income/Loss	2,924,102	452,702	2,743,904	458,913
Capital Expenditures:
Capital Expenitures	1,197,817	2,025	1,349,548	18,104
Depreciation and Amortization:
Depreciation and Amortization	132,009	91,594	258,182	147,534
Ground Support Services [Member]
Operating Revenues:
Operating Revenues	4,702,153	4,161,584	9,487,815	7,796,886
Operating Income (Loss):
Operating Income/Loss	90,699	307,448	312,113	557,615
Capital Expenditures:
Capital Expenitures	30,631	24,416	115,336	101,820
Depreciation and Amortization:
Depreciation and Amortization	42,068	33,856	85,896	66,294
Corporate Segment [Member]
Operating Income (Loss):
Operating Income/Loss	(695,808)	(572,627)	(1,183,487)	(1,280,794)
Capital Expenditures:
Capital Expenitures		6,183		12,115
Depreciation and Amortization:
Depreciation and Amortization	$ 7,687	$ 13,459	$ 16,053	$ 26,994