CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 139,311	$ 148,190
Restricted cash	41	73
Accounts receivable (net of allowance for doubtful accounts of $618 and $1,297, respectively)	38,783	49,946
Inventory	7,267	6,581
Prepaid expenses and other current assets	7,722	5,204
Income tax receivable	670	1,104
Deferred income taxes	75	79
Total current assets	193,869	211,177
Property and equipment, net	17,099	17,213
Goodwill	34,868	34,896
Intangible assets, net	10,815	10,825
Deferred income taxes	250	260
Other assets	1,389	1,484
Total assets	258,290	275,855
Current liabilities:
Accounts payable	5,770	6,064
Accrued compensation	10,325	16,830
Other current liabilities	31,284	36,387
Deferred revenue	55,929	59,195
Total current liabilities	103,308	118,476
Deferred revenue	3,934	4,221
Deferred income taxes	8,697	8,400
Other long-term liabilities	911	155
Total liabilities	116,850	131,252
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000 and 10,000 shares authorized, zero and zero shares issued and outstanding at March 31, 2013 and December 31, 2012, respectively
Non-designated common stock, $0.00005 par value, 190,000 and 190,000 shares authorized, 22,134 and 21,951 shares issued and outstanding at March 31, 2013 and December 31, 2012, respectively	2	2
Additional paid-in capital	162,711	160,693
Accumulated loss	(21,449)	(16,749)
Accumulated other comprehensive income	176	657
Total stockholders' equity	141,440	144,603
Total liabilities and stockholders' equity	$ 258,290	$ 275,855