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Property and Equipment (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
Property and Equipment (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,100,000	$ 700,000	$ 2,400,000	$ 2,100,000
Non-cash capitalized costs	500,000		503,000
Additional depreciation	500,000		500,000
Impairment of long-lived assets	33,000	$ 200,000	33,000	$ 730,000
Property and equipment, net	8,088,000		8,088,000			$ 9,830,000
Network Sites and Equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets			22,000
Property and equipment, net	$ 0		$ 0
Network Sites and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Network Sites and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			10 years
Furniture and Fixtures and Other Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			2 years
Furniture and Fixtures and Other Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			10 years
Computer Software, Internal Use [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Computer Software, Internal Use [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			7 years
TeamConnect LLC [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net					$ 72,000
Ownership percentage	19.50%		19.50%		19.50%
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets			$ 22,000
Right Of Use Asset [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets	$ 11,000		11,000
Property and equipment, net	$ 0		$ 0