Goodwill and Intangible Assets (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Goodwill [Line Items]
Amortization of Intangible Assets, Excluding Amortization of Internal Use Software	$ 2,567,000	$ 1,879,000	$ 1,392,000
Amortization of developed technology	2,567,000	1,879,000	1,392,000
Capitalized Computer Software, Additions	2,000,000	8,200,000	11,900,000
Developed technology [Member]
Goodwill [Line Items]
Amortization of developed technology	12,600,000	10,000,000	8,000,000
Other Intangible Assets [Member]
Goodwill [Line Items]
Amortization of Intangible Assets, Excluding Amortization of Internal Use Software	$ 46,000	$ 46,000	$ 46,000