CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Product revenue	$ 132,431	$ 102,989
Funded research and development	37	6
Total Revenue	132,468	102,995
Costs and expenses:
Cost of product revenue	21,862	15,070
Research and development	16,931	15,660
Selling, general and administrative	60,597	51,032
Costs and Expenses, Total	99,390	81,762
Income from operations	33,078	21,233
Other income (expense):
Investment income, net	635	269
Other income (expense), net	79	(77)
Nonoperating Income (Expense), Total	714	192
Income before income taxes	33,792	21,425
Income tax (benefit) provision	(3,582)	8,515
Net income	$ 37,374	$ 12,910
Basic net income per share	$ 0.85	$ 0.30
Basic weighted average shares outstanding	43,895	42,811
Diluted net income per share	$ 0.82	$ 0.29
Diluted weighted average shares outstanding	45,608	45,178