Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Amortized intangible assets:
Gross carrying amount	$ 24,445	$ 24,445
Accumulated amortization	(23,923)	(23,839)
Net carrying amount	522	606
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	40,366	33,261
Finite Lived Software Development Costs Accumulated Amortization	(1,894)	(1,443)
Finite Lived Software Development Costs Net	38,472	31,818
Total intangible assets, gross carrying amount	32,845	32,845
Intangible Assets, Net (Excluding Goodwill)	8,922	9,006
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	35,398	28,293
Finite Lived Software Development Costs Accumulated Amortization Excluding Accumulated Impairment	0	0
Finite Lived Software Development Costs, Net Excluding, Accumulated Impairment	35,398	28,293
Software Development Costs [Member]
Finite Lived Software Development Costs [Abstract]
Finite Lived Software Development Costs Gross Excluding Accumulated Impairment	6,359	6,359
Finite Lived Software Development Costs Accumulated Amortization Excluding Accumulated Impairment	(1,894)	(1,443)
Finite Lived Software Development Costs, Net Excluding, Accumulated Impairment	4,465	4,916
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	(30)	(7)
Net carrying amount, excluding accumulated impairment	200	223
Developed Technology Rights [Member]
Amortized intangible assets:
Gross carrying amount, excluding accumulated impairment	10,660	10,660
Accumulated amortization, excluding accumulated impairment	(10,338)	(10,277)
Net carrying amount, excluding accumulated impairment	322	383
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