CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 16,242	$ 23,546
Marketable securities	66,831	62,026
Accounts receivable, net of allowance for doubtful accounts of $19 and $0, respectively	9,679	8,841
Inventories	9,006	11,114
Deferred tax assets	31	40
Other current assets and prepaid expenses	1,507	1,439
Total current assets	103,296	107,006
Property and equipment, net	1,362	933
Deferred tax assets, net of current portion	329	553
Intangibles, net	2,019	2,566
Goodwill	1,339	1,339
Other long-term assets	324	397
Total assets	108,669	112,794
Current liabilities:
Accounts payable	1,820	2,107
Accrued liabilities	9,328	9,493
Deferred revenue	7,494	6,618
Total current liabilities	18,642	18,218
Deferred revenue, net of current portion	4,340	2,102
Income tax liability	108	412
Other long-term liabilities	1,314	1,288
Total liabilities	24,404	22,020
Commitments and contingencies (Note 11)
Stockholders' equity:
Convertible preferred stock, $0.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: none	0	0
Common stock, $0.001 par value: Authorized: 50,000,000 shares; Issued and outstanding: 13,931,833 and 14,233,476 shares at December 31, 2013 and 2012, respectively	14	14
Additional paid-in capital	98,820	100,552
Accumulated deficit	(14,620)	(9,873)
Accumulated other comprehensive income (loss)	51	81
Total stockholders' equity	84,265	90,774
Total liabilities and stockholders' equity	$ 108,669	$ 112,794