Condensed Consolidated Statements of Income (Current Period Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Overnight air cargo	$ 12,121,175	$ 12,051,201	$ 24,529,364	$ 22,784,927
Ground equipment sales	7,907,333	6,085,616	13,143,896	16,829,177
Ground support services	4,161,584	3,025,243	7,796,886	6,036,121
	24,190,092	21,162,060	45,470,146	45,650,225
Flight-air cargo	4,618,716	4,939,237	9,404,399	9,399,631
Maintenance-air cargo	6,056,145	5,365,093	12,069,503	10,028,882
Ground equipment sales	6,414,360	5,117,938	10,649,267	14,529,220
Ground support services	3,348,808	2,576,779	6,280,117	5,054,949
General and administrative	2,818,218	2,693,513	5,768,256	5,389,692
Depreciation and amortization	181,353	118,566	325,654	243,247
	23,437,600	20,811,126	44,497,196	44,645,621
Operating Income	752,492	350,934	972,950	1,004,604
Investment income	5,519	3,463	12,572	8,028
Interest expense and Other	(901)	(965)	(901)	(7,187)
	4,618	2,498	11,671	841
Income Before Income Taxes	757,110	353,432	984,621	1,005,445
Income Taxes	301,000	126,000	390,000	361,000
Net Income	$ 456,110	$ 227,432	$ 594,621	$ 644,445
Basic (in Dollars per share)	$ 0.19	$ 0.09	$ 0.24	$ 0.26
Diluted (in Dollars per share)	$ 0.18	$ 0.09	$ 0.24	$ 0.26
Dividends Declared Per Share (in Dollars per share)			$ 0.30	$ 0.25
Basic (in Shares)	2,446,286	2,446,286	2,446,286	2,446,286
Diluted (in Shares)	2,485,246	2,450,165	2,477,047	2,454,162