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Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 12,086	$ 13,767
Less accumulated depreciation	10,784	11,705
Property and equipment, net	1,302	2,062
Network sites and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,614	11,287
Network sites and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Network sites and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 861	863
Computer software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	1 year
Computer software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 303	318
Computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Furniture and fixture and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 489	480
Furniture and fixture and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Furniture and fixture and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Property and equipment, gross	$ 819	$ 819

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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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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