Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Operating Revenues:
Operating Revenues	$ 44,501,246	$ 35,769,170	$ 141,060,109	$ 104,785,413
Operating Expenses:
Overnight air cargo	15,538,554	15,221,098	46,020,254	44,929,504
Ground equipment sales	10,578,846	4,345,727	28,606,906	16,521,728
Ground support services	7,337,862	6,449,260	21,738,525	17,604,562
Printing equipment and maintenance	265,054	948,008	2,848,861	8,072,739
Commercial jet engines and parts	2,143,540	1,672,092	15,534,775	2,459,631
Leasing				49,460
Research and development		107,598	195,653	858,480
General and administrative	7,252,381	4,960,263	21,114,626	15,932,655
Depreciation, amortization and impairment	815,590	411,798	1,743,955	2,755,071
Gain on sale of property and equipment, net	17,739	13,909	16,648	13,909
	43,949,566	34,129,753	137,820,203	109,197,739
Operating Income (Loss)	551,680	1,639,417	3,239,906	(4,412,326)
Non-operating Income (Expense):
Gain on sale of marketable securities	72,145	9,965	72,145	582,910
Foreign currency gain (loss)	(11,797)	235,670	(260,903)	360,556
Other-than-temporary impairment loss on investments	(788,799)		(1,559,972)	(1,502,239)
Other investment income, net	50,485	66,082	123,286	157,044
Interest expense and other	(538,459)	(136,842)	(1,010,177)	(278,219)
Gain on asset retirement obligation			562,500
Bargain purchase acquisition gain, net of tax			501,880
Unrealized loss on interest rate swap	(199,122)		(199,122)
Equity in income of associated company	89,426		119,363
	(1,326,121)	174,875	(1,651,000)	(679,948)
Income (Loss) Before Income Taxes	(774,441)	1,814,292	1,588,906	(5,092,274)
Income Taxes Expense (Benefit)	(60,000)	149,000	595,000	152,000
Net Income (Loss)	(714,441)	1,665,292	993,906	(5,244,274)
Net (Income) Loss Attributable to Non-controlling Interests	42,502	(445,255)	(275,755)	1,796,942
Net Income (Loss) Attributable to Air T, Inc. Stockholders	$ (671,939)	$ 1,220,037	$ 718,151	$ (3,447,332)
Earnings (Loss) Per Share:
Basic (in dollars per share)	$ (0.33)	$ 0.60	$ 0.35	$ (1.60)
Diluted (in dollars per share)	$ (0.33)	$ 0.60	$ 0.35	$ (1.60)
Weighted Average Shares Outstanding:
Basic (in shares)	2,042,789	2,042,789	2,042,789	2,152,301
Diluted (in shares)	2,042,789	2,047,637	2,047,547	2,152,301
Overnight Air Cargo [Member]
Operating Revenues:
Operating Revenues	$ 18,028,688	$ 17,099,640	$ 52,851,936	$ 50,888,019
Ground Equipment Sales [Member]
Operating Revenues:
Operating Revenues	12,911,101	5,400,258	34,376,866	20,743,323
Ground Support Services [Member]
Operating Revenues:
Operating Revenues	8,643,267	7,579,661	26,557,666	21,417,854
Printing Equipment and Maintenance [Member]
Operating Revenues:
Operating Revenues	905,860	2,653,899	5,340,163	6,941,883
Commercial Jet Engines Inventory [Member]
Operating Revenues:
Operating Revenues	3,930,510	2,998,165	21,781,095	4,293,272
Corporate Segment [Member]
Operating Revenues:
Operating Revenues	47,957		47,957
Leasing [Member]
Operating Revenues:
Operating Revenues	$ 33,863	$ 37,547	$ 104,426	$ 501,062