Stock-Based Compensation (Schedule of Fair Value Assumptions) (Details)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	4 years 7 months 17 days	4 years 6 months 11 days
Volatility	59.90%	72.50%
Risk-free interest rate	1.55%	0.71%
Expected dividend yield
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	6 months	6 months
Volatility	34.80%	57.50%
Risk-free interest rate	0.08%	0.12%
Expected dividend yield