Note 6 - Net Earnings Per Share - Earnings Per Common Share (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net Income (Loss) Attributable to Air T, Inc. Stockholders	$ 2,828,694	$ 968,389
Income Per Share:
Basic (in dollars per share)	$ 1.38	$ 0.47
Diluted (in dollars per share)	$ 1.38	$ 0.47
Weighted Average Shares Outstanding:
Basic (in shares)	2,043,607	2,042,789
Diluted (in shares)	2,049,698	2,047,623