Related Party Transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2022
Related Party Transaction [Line Items]
Revenue recognized			$ 1,311,000
Contract liability	$ 61,367,000		61,367,000		$ 54,678,000
Equipment Supplier
Related Party Transaction [Line Items]
Purchase of equipment			910,000
Payable to related parties	120,000		120,000		120,000
Equipment Supplier | Frequency Relocation Agreement
Related Party Transaction [Line Items]
Related party transaction agreement amount	967,000		967,000
Paid during period	97,000
Rachelle B. Chong
Related Party Transaction [Line Items]
Payable to related parties	0		$ 0		0
Extension term			12 months
Consulting fees	36,000	$ 36,000	$ 108,000	$ 108,000
Brian D. McAuley
Related Party Transaction [Line Items]
Payable to related parties	0		$ 0		0
Extension term			12 months
Consulting fees	10,000	10,000	$ 30,000	30,000
TeamConnect LLC
Related Party Transaction [Line Items]
Service fee term			24 months
TeamConnect LLC | PDVConnect
Related Party Transaction [Line Items]
Recurring revenue term			48 months
Contract liability	0		$ 0		$ 0
Goosetown And A BEEP | PDVConnect
Related Party Transaction [Line Items]
Revenue recognized	$ 15,000	$ 15,000	$ 45,000	$ 45,000