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Stock-based compensation, Equity Incentive Plan (Details) - Equity Incentive Plan [Member] $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2024 USD ($) shares	Sep. 30, 2024 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock available for issuance (in shares)	1,483,140	1,483,140
Number of other than options outstanding (in shares)	0	0
Stock-based compensation expense | $	$ 0	$ 0

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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