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Revenue | 12 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Revenue | Revenue The following table provides information regarding the Company’s revenue for each of the services it provides pursuant to its spectrum revenue agreements for the years ended March 31, 2025 and 2024 (in thousands):
| 2025 |  | 2024 |  |
Spectrum revenue |  |  |  |  |
900 MHz Broadband Spectrum Revenue |  |  |  |  |
Ameren | $ | 737 |  |  | $ | 609 |  |  |
Evergy | 1,542 |  |  | 966 |  |  |
Xcel Energy (1) | 3,205 |  |  | 1,887 |  |  |
Narrowband Spectrum Revenue |  |  |  |  |
Motorola | 547 |  |  | 729 |  |  |
Total spectrum revenue (2) | $ | 6,031 |  |  | $ | 4,191 |  |  |
1.The Company commenced revenue recognition in connection with the delivery of cleared 900 MHz Broadband Spectrum and the associated broadband leases to Xcel Energy Services Inc. (“Xcel Energy”) in September 2023. 2.Revenue recognized during the years ended March 31, 2025 and 2024 was included in deferred revenue at the beginning of the respective periods. 900 MHz Broadband Spectrum Revenue In December 2020, the Company entered into its first long-term lease agreements of 900 MHz Broadband Spectrum with Ameren Corporation (“Ameren”), (the “Ameren Agreements”). The Ameren Agreements will enable Ameren to deploy a PLTE network in its service territories in Missouri and Illinois, covering approximately 7.5 million people. Each Ameren Agreement is for an initial term of 30 years with a 10-year renewal option for an additional payment. The scheduled prepayments for the 30-year initial term of the Ameren Agreements total $47.7 million, of which $0.3 million was received by the Company in February 2021, $5.4 million in September 2021, $17.2 million in October 2021, $7.5 million in September 2024 and $1.0 million in October 2024. The prepayments received to date encompass the initial upfront payment(s) due upon signing of the Ameren Agreements and payments for delivery of the relevant cleared spectrum in several metropolitan and urban counties throughout Missouri and Illinois, in accordance with the terms of the Ameren Agreements. The remaining prepayments for the 30-year initial term are due by mid-2026, per the terms of the Ameren Agreements and as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases. The Company is working with the remaining incumbents to clear the 900 MHz Broadband Spectrum allocation in Ameren’s service territory. In August 2021, the FCC granted the first 900 MHz broadband leases to the Company for several counties in Ameren’s service territory, for which the Ameren Agreements were also subsequently approved by the FCC. In accordance with ASC 606, the payments of prepaid fees under the Ameren Agreements will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue is recognized over time as the performance obligations of clearing the 900 MHz Broadband Spectrum and the associated broadband leases are delivered by the respective county, over the contractual term of 30 years. In September 2021, the Company entered into a long-term lease agreement of 900 MHz Broadband Spectrum with Evergy Services, Inc. (“Evergy”), (the “Evergy Agreement”). The Evergy service territories covered by the Evergy Agreement are in Kansas and Missouri, with a population of approximately 3.9 million people. The Evergy Agreement is for an initial term of 20 years with two 10-year renewal options for additional payments. Prepayment in full of the $30.2 million for the 20-year initial term, which was due and payable within thirty (30) days after execution of the Evergy Agreement, was received by the Company in October 2021. During the year ended March 31, 2024, the Company cleared the 900 MHz Broadband Spectrum allocation covered by the Evergy Agreement. In accordance with ASC 606, the payments of prepaid fees under the Evergy Agreement will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue is recognized over time as the performance obligations of clearing the 900 MHz Broadband Spectrum and the associated broadband leases are delivered by the respective county, over the contractual term of 20 years. In October 2022, the Company entered into an agreement with Xcel Energy providing Xcel Energy dedicated long-term usage of the Company’s 900 MHz Broadband Spectrum for a term of 20 years throughout Xcel Energy’s service territory (the “Xcel Energy Agreement”) in eight states including Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas and Wisconsin. The Xcel Energy Agreement also provides Xcel Energy an option to extend the agreement for two 10-year terms for additional payments. The Xcel Energy Agreement allows Xcel Energy to deploy a PLTE network to support its grid modernization initiatives for the benefit of its approximately 3.7 million electricity customers and 2.1 million natural gas customers. The scheduled prepayments for the 20-year initial term of the Xcel Energy Agreement total $80.0 million, of which $8.0 million was received by the Company in December 2022. In July 2023 and November 2023, the Company delivered the cleared 900 MHz Broadband Spectrum and the associated broadband leases and received milestone payments of $21.2 million in each period. In January 2024, the Company delivered the cleared 900 MHz Broadband Spectrum and the associated broadband leases and received a milestone payment of $16.8 million. The remaining prepayments for the 20-year initial term are due by mid-2028, per the terms of the Xcel Energy Agreement and as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases. The Company is working with the remaining incumbents to clear the 900 MHz Broadband Spectrum allocation in Xcel Energy service territories. In accordance with ASC 606, the payments of prepaid fees under the Xcel Energy Agreement will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue will be recognized over time as the performance obligations of clearing the 900 MHz Broadband Spectrum and the associated broadband leases are delivered by the respective county, over the contractual term of approximately 20 years. In November 2023, the Company entered into an agreement with Tampa Electric Company (“TECO”) to provide TECO the use of the Company’s 900 MHz Broadband Spectrum for a term of 20 years throughout TECO’s service territory in West Central Florida (the “TECO Agreement”). The TECO Agreement also provides TECO an option to extend the agreement for two 10-year terms for additional payments. The TECO Agreement, which covers an approximately 2,000-square-mile service territory in West Central Florida, is expected to enable TECO to deploy a PLTE network. The scheduled prepayments for the 20-year initial terms of the TECO Agreement total $34.5 million, of which $6.9 million was received by the Company in December 2023. The remaining prepayments for the 20-year initial term are due by fiscal year 2026, per the terms of the TECO Agreement and as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases. The Company is working with incumbents to clear the 900 MHz Broadband Spectrum allocation in TECO service territories. The payments of prepaid fees under the TECO Agreement will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue will be recognized over time as the performance obligations of clearing the 900 MHz Broadband Spectrum and the associated broadband leases are delivered by the respective county, over the contractual term of approximately 20 years. Narrowband Spectrum Revenue In September 2014, Motorola paid the Company an upfront, fully paid fee of $7.5 million in order to use a portion of the Company’s narrowband spectrum licenses. The payment of the fee is accounted for as deferred revenue on the Company’s Consolidated Balance Sheets and is recognized ratably as the service is provided over the contractual term of approximately ten years. As of December 31, 2024, the Company recognized all the revenue associated with the 2014 Motorola spectrum agreement. Capitalized Contract Costs The Company capitalizes incremental costs associated with obtaining a spectrum revenue agreement with a customer, which generally includes sales commissions. Capitalized incremental costs are amortized over the contractual term beginning on the first delivery of a broadband lease. The Company’s capitalized contract costs consisted of the following activity (in thousands):
| 2025 |  | 2024
Balance at the beginning of the year | $ | 1,027 |  |  | $ | 870 |
Additions | 339 |  |  | 199 |
Amortization | (125) |  |  | (42) |
Balance at the end of the year | 1,241 |  |  | 1,027 |
Less amount classified as current assets (1) | (132) |  |  | (580) |
Noncurrent assets (1) | $ | 1,109 |  |  | $ | 447 |
1.Current assets are recorded as prepaid expenses and other current assets and noncurrent assets are recorded as other assets on the Company’s Consolidated Balance Sheets. Contract Liabilities Contract liabilities primarily relate to advanced consideration received from customers in connection with spectrum revenue agreements, for which revenue is recognized over the term of each delivered broadband lease. The Company’s contract liabilities consisted of the following activity (in thousands):
| 2025 |  | 2024
Balance at the beginning of the year | $ | 122,212 |  |  | $ | 60,759 |
Net additions (1) | 8,491 |  |  | 65,644 |
Revenue recognized | (6,031) |  |  | (4,191) |
Balance at the end of the year | 124,672 |  |  | 122,212 |
Less amount classified as current liabilities (2) | (6,095) |  |  | (6,470) |
Noncurrent liabilities (2) | $ | 118,577 |  |  | $ | 115,742 |
1.Represents milestone payments received from customer contracts pursuant to the terms of the associated spectrum revenue agreements, net of delivery delay adjustments. 2.Current liabilities and noncurrent liabilities are recorded as deferred revenue on the Company’s Consolidated Balance Sheets. Remaining Performance Obligations Revenue allocated to remaining performance obligations of the Company’s contracts represent contracted revenue that will be recognized in future periods. Total performance obligations include deferred revenue (i.e., contract liabilities) as well as amounts that will be invoiced and recognized in future periods. Revenue allocated to remaining performance obligations was $181.5 million as of March 31, 2025, which will be recognized over the remaining contract terms up to 30 years.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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