Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015
Intangible assets, other than capitalized software development costs
Gross carrying amount	$ 50,728		$ 50,728		$ 50,728
Accumulated amortization	(26,640)		(26,640)		(23,039)
Net intangible assets	24,088		24,088		27,689
Amortization			(3,601)	$ (3,608)
Operating Expense [Member]
Intangible assets, other than capitalized software development costs
Amortization	(897)	$ (908)	(1,794)	(1,906)
Cost of Revenue [Member]
Intangible assets, other than capitalized software development costs
Amortization	(904)	$ (859)	(1,807)	$ (1,702)
Customer Relationships [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	22,050		22,050		22,050
Accumulated amortization	(16,508)		(16,508)		(14,986)
Net intangible assets	5,542		5,542		7,064
Trade Name & Contracts [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	3,368		3,368		3,368
Accumulated amortization	(2,431)		(2,431)		(2,159)
Net intangible assets	937		937		1,209
Software Technology [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	25,310		25,310		25,310
Accumulated amortization	(7,701)		(7,701)		(5,894)
Net intangible assets	$ 17,609		$ 17,609		$ 19,416