Segment Information - Summary of Reported Segment Revenue, Segment Operating Income (Loss), and Significant Segment Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
General and administrative	$ 10,813	$ 6,159
Plant specific operations	1,240	0
Plant nonspecific operations	771	0
Cost of other revenue (exclusive of depreciation shown separately)	638	0
Cost of wireless and fiber internet services (exclusive of depreciation shown separately)	548	0
Marketing	308	0
Total operating expenses	16,325	6,243
Telecommunications segment operating loss	(6,959)	(6,243)
Emigration tax (expense)	(1,711)	0
Loss on dissenting shareholders' liability	1,103	0
Gain on lease settlement	14	0
Gain on lease settlement	14	0
Gain on sale of assets	29	0
Other income (expense)	66	0
Loss before income taxes and discontinued operations	(8,288)	$ (6,098)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	9,366
General and administrative	4,406
Depreciation and amortization	1,960
Plant specific operations	1,240
Plant nonspecific operations	771
Cost of other revenue (exclusive of depreciation shown separately)	638
Cost of wireless and fiber internet services (exclusive of depreciation shown separately)	548
Marketing	256
Total operating expenses	9,819
Telecommunications segment operating loss	(453)
Other segment items	95
Wireless Internet Sevices [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	5,432
Fiber Internet Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	2,600
Other Revenue [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	1,334
Loss by Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Loss before income taxes and discontinued operations	(358)
Corporate Overhead and Other Income [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
General and administrative	(6,407)
Depreciation and amortization	(47)
Marketing	(52)
Interest income, net	1,379
Emigration tax (expense)	(1,711)
Loss on dissenting shareholders' liability	(1,103)
Gain on lease settlement	14
Gain on sale of assets	(1)
Other income (expense)	(2)
Loss before income taxes and discontinued operations	$ (8,288)