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Note 15 - Leases (Tables)

6 Months Ended

Sep. 30, 2025

Notes Tables

Assets And Liabilities Lessee [Table Text Block]

		September 30, 2025				March 31, 2025
Leases:
Right-of-use assets – Operating		$	3,789			$	3,829
Total right-of-use assets			3,789				3,829
Lease liabilities – ST Operating		$	968			$	685
Lease liabilities – LT Operating			2,681				2,684
Total lease liabilities		$	3,649			$	3,369
Weighted-average remaining lease term			4.60				4.94
Weighted-average discount rate			14.58	%			14.94	%

Lease, Cost [Table Text Block]

		Three Months Ended				Six Months Ended
		September 30, 2025				September 30, 2025
Operating Leases:
Operating lease costs – fixed		$	421			$	834
Operating lease costs – variable			45				91
Short-term lease costs			42				83
Total lease costs		$	508			$	1,008

		Three Months Ended				Six Months Ended
		September 30, 2024				September 30, 2024
Operating Leases:
Operating lease costs – fixed		$	336			$	645
Operating lease costs – variable			45				91
Short-term lease costs			39				78
Total lease costs		$	420			$	814

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

		Leases
Year ending March 31,
2026 (remaining)		$	693
2027			1,555
2028			1,003
2029			396
2030			326
Thereafter			1,227
Total minimum lease payments			5,200
Less: interest			(1,551	)
Present value of lease liabilities		$	3,649

X

- Definition

Tabular disclosure of lessee's assets and liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	amsc_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
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X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

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X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration