CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Revenue:
Products	$ 27,166	$ 21,761
Funded research and development	189	241
Revenues, Total	27,355	22,002
Costs and expenses:
Cost of product revenue excluding amortization of intangibles	5,891	5,284
Research and development	7,324	6,653
Selling, general and administrative	18,176	15,753
Amortization of intangible assets	385	367
Costs and Expenses, Total	31,776	28,057
Loss from operations	(4,421)	(6,055)
Other (expense) income :
Investment income (expense), net	4	(2)
Gain on sale of WorldHeart stock		239
Other (expense) income, net	(81)	81
Nonoperating Income (Expense), Total	(77)	318
Loss before provision for income taxes	(4,498)	(5,737)
Provision for income taxes	96	243
Net loss	$ (4,594)	$ (5,980)
Basic and diluted net loss per share	$ (0.12)	$ (0.16)
Weighted average shares outstanding	38,268	37,086