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Business Concentrations
9 Months Ended
Dec. 31, 2021
Business Concentrations [Abstract]  
Business Concentrations 11.     Business Concentrations For the three and nine months ended December 31, 2021, the Company’s operating revenue was entirely from upfront, fully paid fees received from Motorola and Ameren, as discussed in Note 2 Revenue. For the three and nine months ended December 31, 2020, the Company had one Tier 1 domestic carrier and one reseller, both related to the pdvConnect and Team Connect businesses, that accounted for approximately 20% and 21% of total operating revenues, respectively. As of December 31, 2021, the Company does not have an outstanding accounts receivable balance. As of March 31, 2021, the Company had one Tier 1 domestic carrier that accounted for the entire total accounts receivable.