Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from the computation of diluted earnings per share	2,100	1,500
Weighted average basic shares outstanding	75,206	74,272
Incremental shares from assumed exercises of stock options and options under the ESPP	899	1,211
Weighted average diluted shares outstanding	76,105	75,483