Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Costs and expenses:
Total share-based compensation	$ 2,001	$ 743	$ 5,177	$ 2,328
Income tax benefit	(718)	(225)	(1,825)	(701)
Decrease in net income	1,283	518	3,352	1,627
Cost of revenue [Member]
Costs and expenses:
Total share-based compensation	144	101	459	300
Research and development costs [Member]
Costs and expenses:
Total share-based compensation	273	67	690	280
Selling, general and administrative [Member]
Costs and expenses:
Total share-based compensation	$ 1,584	$ 575	$ 4,028	$ 1,748