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The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

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Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)		1 Months Ended	12 Months Ended
	Jun. 10, 2019 USD ($) shares	Apr. 30, 2020 USD ($)	Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)	Dec. 11, 2020 USD ($)	Nov. 24, 2020 USD ($)
New Accounting Pronouncements or Change in Accounting Principle
Number of reportable segments \| segment			4
Goodwill			$ 4,227,000	$ 4,227,000
Redeemable non-controlling interest			6,598,000	6,080,000
Noncontrolling interest, period increase (decrease)			500,000
Adjustment to fair value of redeemable non-controlling interest			2,857,000	(21,000)
Passthrough cost			$ 19,900,000	$ 23,700,000
Minimum debt service coverage ratio			1.25
Minimum tangible net worth			$ 15,000,000
Commercial Jet Engines and Parts
New Accounting Pronouncements or Change in Accounting Principle
Goodwill			4,200,000
Contrail Agreement
New Accounting Pronouncements or Change in Accounting Principle
Payment Of Capital Commitments			1,400,000
Contrail Agreement \| Maximum
New Accounting Pronouncements or Change in Accounting Principle
Capital commitment			1,600,000
Scenario, Plan
New Accounting Pronouncements or Change in Accounting Principle
Minimum tangible net worth			$ 8,000,000
AIRT Small Business Administration S B A C A R E S Act Paycheck Protection Program
New Accounting Pronouncements or Change in Accounting Principle
Payments for (proceeds from) loans and leases		$ 8,200,000
Term Loan G - ONB
New Accounting Pronouncements or Change in Accounting Principle
Minimum net worth required for compliance						$ 43,600,000
Term Loan - PSB
New Accounting Pronouncements or Change in Accounting Principle
Minimum net worth required for compliance					$ 6,200,000
Computer Equipment
New Accounting Pronouncements or Change in Accounting Principle
Property, plant and equipment, useful life			3 years
Flight Equipment
New Accounting Pronouncements or Change in Accounting Principle
Property, plant and equipment, useful life			7 years
Equipment Leased to Other Party
New Accounting Pronouncements or Change in Accounting Principle
Property, plant and equipment, useful life			10 years
Building
New Accounting Pronouncements or Change in Accounting Principle
Property, plant and equipment, useful life			30 years
Air T Funding \| Trust Preferred Capital Security
New Accounting Pronouncements or Change in Accounting Principle
Stock issued during period (in shares) \| shares	1,600,000
Stock issued during period	$ 4,000,000.0
Warrant \| Air T Funding
New Accounting Pronouncements or Change in Accounting Principle
Stock issued during period (in shares) \| shares	8,400,000
Stock issued during period	$ 21,000,000.0