Net Earnings (Loss) Per Share - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share
Net (Loss) Income from continuing operations	$ (1,189)	$ 1,763	$ 7,141	$ (2,550)
Net (income) loss from continuing operations attributable to non-controlling interests	(73)	335	(559)	884
Net (loss) income from continuing operations attributable to Air T, Inc. Stockholders	$ (1,262)	$ 2,098	$ 6,582	$ (1,666)
(Loss) Income from continuing operations per share:
Basic (in dollars per share)	$ (0.44)	$ 0.73	$ 2.28	$ (0.58)
Diluted (in dollars per share)	$ (0.44)	$ 0.73	$ 2.28	$ (0.58)
Antidilutive shares excluded from computation of loss per share (shares)	11	0	0	5
Gain on sale of discontinued operations, net of tax	$ 0	$ 0	$ 0	$ 4
Income from discontinued operation attributable to Air T, Inc. stockholders	$ 0	$ 0	$ 0	$ 4
Income from discontinued operations per share:
Basic (in dollars per share)	$ 0	$ 0	$ 0	$ 0
Diluted (in dollars per share)	0	0	0	0
(Loss) Income per share:
Basic (in dollars per share)	(0.44)	0.73	2.28	(0.58)
Diluted (in dollars per share)	$ (0.44)	$ 0.73	$ 2.28	$ (0.58)
Weighted Average Shares Outstanding:
Basic (in shares)	2,882	2,882	2,882	2,882
Diluted (in shares)	2,882	2,887	2,893	2,882
Continuing Operations
(Loss) Income from continuing operations per share:
Antidilutive shares excluded from computation of loss per share (shares)	11	0	0	5