Commitments and Contingencies (Future Minimum Rental Payments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
Operating Leased Assets [Line Items]
2016 (Remaining three months ending March 31, 2016)	$ 502		$ 502
2017	2,000		2,000
2018	1,934		1,934
2019	1,926		1,926
2020	1,757		1,757
Thereafter	817		817
Total future minimum payments due	8,936		8,936		$ 9,957
Less: Sublease rentals	(1,224)		(1,224)		(1,401)
Minimum lease payments, less minimum sublease rentals	7,712		7,712		$ 8,556
Rent expense	400	$ 400	1,200	$ 1,200
Facilities
Operating Leased Assets [Line Items]
2016 (Remaining three months ending March 31, 2016)	455		455
2017	1,923		1,923
2018	1,934		1,934
2019	1,926		1,926
2020	1,757		1,757
Thereafter	817		817
Total future minimum payments due	8,812		8,812
Equipment
Operating Leased Assets [Line Items]
2016 (Remaining three months ending March 31, 2016)	47		47
2017	77		77
2018	0		0
2019	0		0
2020	0		0
Thereafter	0		0
Total future minimum payments due	$ 124		$ 124