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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Spectrum revenue	$ 1,525	$ 608
Spectrum revenue | Ameren Corporation
Disaggregation of Revenue [Line Items]
Spectrum revenue	156	152
Spectrum revenue | Evergy
Disaggregation of Revenue [Line Items]
Spectrum revenue	386	274
Spectrum revenue | Xcel Energy
Disaggregation of Revenue [Line Items]
Spectrum revenue	801	0
Spectrum revenue | Motorola
Disaggregation of Revenue [Line Items]
Spectrum revenue	$ 182	$ 182

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