Goodwill and Intangible Assets -Schedule of acquired finite-lived intangible assets by major class (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2024 USD ($)
Finite-Lived Intangible Assets [Line Items]
Definite lived intagible assets,Net book value	$ 10,342
Indefinite lived intangible assets Gross Carrying Amount	0
Indefinite lived intangible assets,Additions	11,130
Indefinite lived intangible assets,Impairment	0
Indefinite lived intangible assets Accumulated Amortization	(208)
Indefinite lived intangible assets,Net book value	10,922
Indefinite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite lived intangible assets Gross Carrying Amount	0
Indefinite lived intangible assets,Additions	580
Indefinite lived intangible assets,Impairment	0
Indefinite lived intangible assets Accumulated Amortization	0
Indefinite lived intangible assets,Net book value	580
Definite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Definite lived intagible assets, Gross Carrying Amount	0
Definite lived intagible assets,Additions	10,550
Definite lived intagible assets,Impairment	0
Definite lived intagible assets, Accumulated amortization	(208)
Definite lived intagible assets,Net book value	10,342
CBRS FCC license | Indefinite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite lived intangible assets Gross Carrying Amount	0
Indefinite lived intangible assets,Additions	580
Indefinite lived intangible assets,Impairment	0
Indefinite lived intangible assets Accumulated Amortization	0
Indefinite lived intangible assets,Net book value	$ 580
Subscriber relationships | Definite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Definite lived intagible assets Weighted Average Remaining Amortization Period	13 years 8 months 19 days
Definite lived intagible assets, Gross Carrying Amount	$ 0
Definite lived intagible assets,Additions	7,300
Definite lived intagible assets,Impairment	0
Definite lived intagible assets, Accumulated amortization	(152)
Definite lived intagible assets,Net book value	$ 7,148
Trade name | Definite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Definite lived intagible assets Weighted Average Remaining Amortization Period	20 years 8 months 8 days
Definite lived intagible assets, Gross Carrying Amount	$ 0
Definite lived intagible assets,Additions	3,000
Definite lived intagible assets,Impairment	0
Definite lived intagible assets, Accumulated amortization	(41)
Definite lived intagible assets,Net book value	$ 2,959
Internally developed software | Definite lived intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Definite lived intagible assets Weighted Average Remaining Amortization Period	4 years 8 months 12 days
Definite lived intagible assets, Gross Carrying Amount	$ 0
Definite lived intagible assets,Additions	250
Definite lived intagible assets,Impairment	0
Definite lived intagible assets, Accumulated amortization	(15)
Definite lived intagible assets,Net book value	$ 235