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v3.22.1

Revenue - Narrative (Details) people in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) people | Feb. 28, 2021 people | Dec. 31, 2020 USD ($) people | Mar. 31, 2022 USD ($) item | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Sep. 30, 2014 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Number of people | people |  | 3.6 | 7.5 |  |  |  |
Lease term |  |  | 30 years |  |  |  |
Lease extension | 10 years |  | 10 years |  |  |  |
Scheduled prepayments |  |  | $ 47,700,000 |  |  |  |
Contractual term |  |  | 30 years | 30 years |  |  |
Revenue recognized |  |  |  | $ 1,084,000 | $ 729,000 |  |
Days after agreement execution, payments due | 30 days |  |  |  |  |  |
Prepaid expenses and other current assets |  |  |  | $ 10,147,000 | 3,508,000 |  |
Number of carriers |  |  |  | 2 |  | 2 |
Accrued sales commission |  |  |  | $ 300,000 | 400,000 |  |
Direct cost of revenue (exclusive of depreciation and amortization) |  |  |  | 5,000 | 1,606,000 | $ 2,833,000 |
Sales and support |  |  |  | 4,461,000 | 2,942,000 | 4,055,000 |
Spectrum revenue |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Revenue recognized |  |  |  | $ 729,000 | $ 729,000 | 729,000 |
Prepaid expenses and other current assets |  |  |  |  |  |  | $ 7,500,000
Maximum |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Lease term | 40 years |  | 40 years |  |  |  |
Lease extension |  |  |  | 10 years |  |  |
Contractual term |  |  |  | 10 years |  |  |
Ameren |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Lease term |  |  |  | 30 years |  |  |
Revenue recognized |  |  |  | $ 400,000 |  |  |
Evergy |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Number of people | people | 3.9 |  |  |  |  |  |
Lease term | 20 years |  |  |  |  |  |
Scheduled prepayments | $ 30,200,000 |  |  |  |  |  |
Tier 1 Carrier Partner |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Number of carriers |  |  |  | 1 | 1 |  |
Goosetown And A BEEP |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Direct cost of revenue (exclusive of depreciation and amortization) |  |  |  |  |  | 200,000 |
Sales and support |  |  |  |  |  | $ 300,000 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-03-31 |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |
Service revenue payment terms |  |  |  | 30 days |  |  |

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