Business Concentrations	6 Months Ended
	Sep. 30, 2021
Business Concentrations [Abstract]
Business Concentrations	12.     Business Concentrations For the three and six months ended September 30, 2021, the Company’s operating revenue was entirely from the upfront, fully-paid fee received from Motorola, as discussed in Note 3 to the Consolidated Financial Statements in this Quarterly Report. For the three and six months ended September 30, 2020, the Company had one Tier 1 domestic carrier and one reseller that accounted for approximately 21% of total operating revenues, respectively. As of September 30, 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.