Net Earnings (Loss) Per Share - Narrative (Details) - Air T's 2012 Stock Option Plan	3 Months Ended
	Dec. 31, 2023 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Exercises of stock options (in shares)	3,750
Options exercised price (in dollars per share) | $ / shares	$ 7.04
Unexpired options outstanding (in shares)	0