CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 22,426	$ 16,474
Short-term investments	1,942	1,927
Accounts receivable, net of allowance of $25 and $21	2,279	863
Inventory	581	2,105
Deferred cost of goods sold	122	123
Deferred tax asset	7,730	0
Other current assets	806	584
Total current assets	35,886	22,076
Property and equipment, net	3,820	2,398
Intangible assets, net	11,622	214
Goodwill	25,150	1,210
Non-current deferred tax asset	53,977	0
Other assets	278	686
Total assets	130,733	26,584
Current liabilities:
Accounts payable	5,476	4,551
Accrued compensation	3,105	1,722
Accrued warranty	387	362
Accrued taxes	1,472	1,828
Deferred revenue	891	835
Other accrued liabilities	884	1,386
Total current liabilities	12,215	10,684
Non-current liabilities	68	39
Total liabilities	12,283	10,723
Commitments and contingencies (Note 4)
Stockholders' equity:
Preferred stock, $0.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: no shares at March 31, 2012 and at March 31, 2011	0	0
Common stock, $0.001 par value: Authorized: 100,000,000 shares; Issued and outstanding: 70,679,493 shares and 62,379,030 shares at March 31, 2012 and 2011, respectively	71	62
Additional paid-in capital	241,555	208,218
Accumulated other comprehensive loss	(58)	(73)
Accumulated deficit	(123,118)	(192,346)
Total stockholders' equity	118,450	15,861
Total liabilities and stockholders' equity	$ 130,733	$ 26,584