Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Amortized intangible assets:
Gross carrying amount	$ 23,840	$ 24,183
Accumulated amortization	(23,687)	(24,007)
Net carrying amount	153	176
Unamortized intangible assets:
Carrying amount, excluding accumulated impairment	(230)	(230)
Accumulated impairment	(570)	(570)
Carrying amount	8,400	8,400
Finite Lived Software Development Costs [Abstract]
Finite Lived Software Development Costs Accumulated Impairment	(1,391)	(1,391)
Finite Lived Software Development Costs Gross	53,212	46,559
Finite Lived Software Development Costs Accumulated Amortization	(5,743)	(2,344)
Finite Lived Software Development Costs Net	47,469	44,215
Total intangible assets, gross carrying amount	32,240	32,583
Intangible Assets, Net (Excluding Goodwill)	8,553	8,576
Trade Names [Member]
Unamortized intangible assets:
Carrying amount, excluding accumulated impairment	9,200	9,200
Project Expenditures Not Yet In Use [Member]
Finite Lived Software Development Costs [Abstract]
Finite Lived Software Development Costs Gross Excluding Accumulated Impairment	6,614	41,591
Finite Lived Software Development Costs Accumulated Amortization Excluding Accumulated Impairment	0	0
Finite Lived Software Development Costs, Net Excluding, Accumulated Impairment	6,614	41,591
Software Development Costs [Member]
Finite Lived Software Development Costs [Abstract]
Finite Lived Software Development Costs Gross Excluding Accumulated Impairment	47,989	6,359
Finite Lived Software Development Costs Accumulated Amortization Excluding Accumulated Impairment	(5,743)	(2,344)
Finite Lived Software Development Costs, Net Excluding, Accumulated Impairment	42,246	4,015
Patented Technology [Member]
Amortized intangible assets:
Gross carrying amount, excluding accumulated impairment	80	80
Accumulated amortization, excluding accumulated impairment	(80)	(80)
Net carrying amount, excluding accumulated impairment	0	0
Trade Names [Member]
Amortized intangible assets:
Gross carrying amount, excluding accumulated impairment	230	230
Accumulated amortization, excluding accumulated impairment	(77)	(54)
Net carrying amount, excluding accumulated impairment	153	176
Developed Technology Rights [Member]
Amortized intangible assets:
Gross carrying amount, excluding accumulated impairment	10,317	10,660
Accumulated amortization, excluding accumulated impairment	(10,055)	(10,398)
Net carrying amount, excluding accumulated impairment	262	262
Unamortized intangible assets:
Accumulated impairment	262	262
Noncompete Agreements [Member]
Amortized intangible assets:
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
Customer Relationships [Member]
Amortized intangible assets:
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