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Revenue (Tables)
 12 Months Ended
Mar. 31, 2023
Revenue from Contract with Customer [Abstract]  
Disaggregation of 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, 2023, 2022 and 2021 (in thousands):
202320222021
Spectrum revenues
900 MHz Broadband Spectrum Revenue
Ameren$609 $355 $— 
Evergy(1)
581 — — 
Narrowband Spectrum Revenue
Motorola729 729 729 
Total spectrum revenue(2)
$1,919 $1,084 $729 
Services revenue— — 192 
Total operating revenues$1,919 $1,084 $921 
1.The Company commenced revenue recognition in connection with the delivery of cleared 900 MHz Broadband Spectrum and the associated broadband licenses to Evergy for 81 counties.
2.Revenue recognized during the years ended March 31, 2023, 2022 and 2021 was included in deferred revenue at the beginning of the respective periods.
Schedule of Contract Assets
The following table presents the activity for the Company’s contract assets (in thousands):
20232022
Balance at the beginning of the year$638 $381 
Additions249 263 
Amortization(17)(6)
Impairment— — 
Balance at the end of the year870 638 
Less amount classified as current assets - prepaid expenses and other current assets(418)(238)
Noncurrent assets - included in other assets$452 $400 
Schedule of Contract Liabilities
The following table presents the activity for the Company’s contract liabilities (in thousands):
20232022
Balance at the beginning of the year$54,678 $2,983 
Additions8,000 52,779 
Revenue recognized(1,919)(1,084)
Balance at the end of the year60,759 54,678 
Less amount classified as current liabilities(2,769)(1,478)
Noncurrent liabilities$57,990 $53,200