Supplemental Financial Information - Intangible Assets (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2019
Intangible Assets
Gross Carrying Amount	$ 13,715,000		$ 13,715,000		$ 9,484,000
Accumulated Amortization	(6,831,000)		(6,831,000)		(6,198,000)
Net Book Value	6,884,000		6,884,000		3,286,000
Amortization expense	387,000	$ 285,000	634,000	$ 550,000
Amortization recorded to cost of revenues	157,000	220,000	337,000	420,000
Amortization of intangible assets	231,000	$ 65,000	297,000	$ 130,000
Technology
Intangible Assets
Gross Carrying Amount	1,856,000		1,856,000		1,856,000
Accumulated Amortization	(1,856,000)		(1,856,000)		(1,856,000)
Customer contracts / relationships
Intangible Assets
Gross Carrying Amount	4,250,000		4,250,000		750,000
Accumulated Amortization	(896,000)		(896,000)		(750,000)
Net Book Value	3,354,000		3,354,000
Trade names and non-compete agreements
Intangible Assets
Gross Carrying Amount	1,320,000		1,320,000		1,110,000
Accumulated Amortization	(1,127,000)		(1,127,000)		(1,110,000)
Net Book Value	193,000		193,000
Capitalized software development costs
Intangible Assets
Gross Carrying Amount	6,289,000		6,289,000		5,768,000
Accumulated Amortization	(2,952,000)		(2,952,000)		(2,482,000)
Net Book Value	$ 3,337,000		$ 3,337,000		$ 3,286,000