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8. LEASES - Operating leases (Details)		3 Months Ended	6 Months Ended
	Jun. 06, 2024 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2025 USD ($)
Leases
Operating lease, option to extend			true
Operating lease, renewal term			10 years
Proceeds from sale of assets	$ 11,300,000			$ 11,336,000
Lease term	10 years
Number of options to renew the lease term	2
Renewal lease term for sale and leaseback transaction	5 years
Amount of base rent per month	$ 90,768
Incremental rental rate percentage	3.00%
Gain from sale and leaseback transaction		$ 5,700,000
Operating lease right-of-use assets			$ 8,913,000		$ 9,547,000
Lease liabilities, current			1,602,000		1,642,000
Lease liabilities, non-current			7,460,000		8,001,000
Total operating lease liabilities			$ 9,062,000		$ 9,643,000
Minimum
Leases
Operating lease, term of lease			2 months
Maximum
Leases
Operating lease, term of lease			104 months

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- Definition

The remaining lease term of operating leases.

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Amount of base rent per month under sale leaseback transaction.

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- Definition

Incremental rental rate percentage per the sale leaseback transaction.

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- Definition

Renewal lease term for sale and leaseback transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Number of options to renew the lease term under sale lease back transaction.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Indicates (true false) whether lessee has option to extend operating lease.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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- Definition

Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

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- Definition

Lease term for sale and leaseback transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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