CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 17,200	$ 16,474
Restricted cash	28	0
Short-term investments	1,904	1,927
Accounts receivable, net	1,796	863
Inventory	654	2,105
Deferred cost of goods sold	137	123
Other current assets	1,058	584
Total current assets	22,777	22,076
Property and equipment, net	3,252	2,398
Intangible assets, net	12,336	214
Goodwill	22,642	1,210
Other assets	660	686
Total assets	61,667	26,584
Current liabilities:
Accounts payable	4,719	4,551
Accrued compensation	2,611	1,722
Accrued warranty	391	362
Accrued taxes	1,701	1,828
Deferred revenue	1,323	835
Other accrued liabilities	2,372	1,386
Total current liabilities	13,117	10,684
Other liabilities	409	39
Total liabilities	13,526	10,723
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock	62	62
Additional paid-in capital	237,742	208,218
Accumulated other comprehensive loss	(96)	(73)
Accumulated deficit	(189,567)	(192,346)
Total stockholders' equity	48,141	15,861
Total liabilities and stockholders' equity	$ 61,667	$ 26,584