Intangible Assets and Software Development Costs - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 24,183	$ 24,183
Accumulated amortization	(24,168)	(24,145)
Net carrying amount	15	38
Finite Lived Software Development Costs [Abstract]
Total intangible assets, gross carrying amount	32,583	32,583
Finite Lived Software Development Costs Gross	67,541	67,541
Finite Lived Software Development Costs Accumulated Amortization	(39,277)	(32,974)
Finite Lived Software Development Costs Net	28,264	34,567
Intangible assets, net	8,415	8,438
Total intangible assets, gross carrying amount	32,583	32,583
Trade Names [Member]
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount, excluding accumulated impairment	230	230
Accumulated amortization, excluding accumulated impairment	(215)	(192)
Net carrying amount, excluding accumulated impairment	15	38
Unamortized intangible assets:
Carrying amount, excluding accumulated impairment	8,400	8,400
Customer Relationships [Member]
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount, excluding accumulated impairment	10,775	10,775
Accumulated amortization, excluding accumulated impairment	(10,775)	(10,775)
Net carrying amount, excluding accumulated impairment	0	0
Noncompete Agreements [Member]
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount, excluding accumulated impairment	2,700	2,700
Accumulated amortization, excluding accumulated impairment	(2,700)	(2,700)
Net carrying amount, excluding accumulated impairment	0	0
Developed Technology Rights [Member]
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount, excluding accumulated impairment	10,398	10,398
Accumulated amortization, excluding accumulated impairment	(10,398)	(10,398)
Net carrying amount, excluding accumulated impairment	0	0
Patented Technology [Member]
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross carrying amount, excluding accumulated impairment	80	80
Accumulated amortization, excluding accumulated impairment	(80)	(80)
Net carrying amount, excluding accumulated impairment	$ 0	$ 0