Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 7,475	$ 17,856
Short-term investments	38,497	54,694
Accounts receivable, net of allowances for doubtful accounts and other adjustments of $1,382 (2011) and $855 (2010)	8,525	29,812
Income tax receivable	8,293	2,872
Inventories, net of reserves for excess and obsolete inventory of $417 (2011) and $558 (2010)	309	370
Prepaid expenses and other current assets	1,138	1,167
Deferred tax asset	8	2,565
Total current assets	64,245	109,336
Equipment and improvements, net	15,482	11,623
Goodwill	0	94,231
Intangible assets, net	0	19,459
Other assets	214	243
Total assets	79,941	234,892
Current liabilities:
Accounts payable	3,181	4,592
Accrued liabilities	7,641	8,444
Deferred revenue	703	1,667
Total current liabilities	11,525	14,703
Non-current liabilities:
Deferred rent and other long term liabilities	3,546	197
Deferred tax liability	10	1,727
Total non-current liabilities	3,556	1,924
Commitments and contingencies (Note 5)
Stockholders' equity:
Preferred stock, par value $0.001 per share; 5,000,000 shares authorized; none issued or outstanding
Common stock, par value $0.001 per share; 50,000,000 shares authorized; 35,611,976 and 34,971,108 shares issued and outstanding at December 31, 2011 and December 31, 2010, respectively	36	35
Additional paid-in capital	207,927	201,702
Accumulated other comprehensive loss	(35)	(10)
Accumulated earnings (deficit)	(143,068)	16,538
Total stockholders' equity	64,860	218,265
Total liabilities and stockholders' equity	$ 79,941	$ 234,892