Related Party Transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019	Sep. 30, 2014
Related Party Transaction [Line Items]
Consulting fees	$ 1,404,000	$ 1,459,000	$ 4,393,000	$ 4,419,000
Contract liability	3,600,000		3,600,000		$ 4,200,000
Revenue recognized			600,000
Motorola [Member]
Related Party Transaction [Line Items]
Purchase of equipment	0	200,000	11,000	400,000
Revenue recognized	183,000	183,000	547,000	547,000
Consulting Firm [Member]
Related Party Transaction [Line Items]
Consulting fees		136,000	0	136,000
Payable to related parties					5,000
Equipment Supplier [Member]
Related Party Transaction [Line Items]
Payable to related parties	90,000		90,000		60,000
Spectrum [Member]
Related Party Transaction [Line Items]
Contract liability						$ 7,500,000
Revenue recognized	183,000	$ 183,000	$ 547,000	$ 547,000
Goosetown [Member]
Related Party Transaction [Line Items]
Recurring revenue term			2 years
TeamConnect LLC [Member]
Related Party Transaction [Line Items]
Service fee term			24 months
TeamConnect LLC [Member] | PDVConnect [Member]
Related Party Transaction [Line Items]
Contract liability	16,000		$ 16,000		$ 118,000
Revenue recognized	$ 215,000		$ 729,000
Recurring revenue term			48 months