CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Operating Activities:
Net loss	$ (6,722)		$ (14,291)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	404		324
Realized gain on investments	0		(7)
Amortization of premiums and discounts on investments	446		1,212
Amortization of purchased technology	62		62
Amortization of intangible assets and other	1,155		536
Stock-based compensation	2,938		2,811
Changes in assets and liabilities:
Accounts receivable, net	649		(981)
Prepaid expenses and other current assets	(533)		442
Other long-term assets	(187)		(136)
Accounts payable	(507)		71
Accrued compensation	646		1,087
Other accrued liabilities	(123)		896
Other long-term liabilities	320		366
Deferred revenue	849		2,346
Net cash used in operating activities	(603)		(5,262)
Investing Activities:
Purchases of property and equipment	(503)		(231)
Acquisition of business, net of cash acquired	(1,327)		(8,419)
Purchases of investments	(33,317)		(42,073)
Sales of investments	2,400		14,006
Maturities of investments	33,560		39,665
Net cash provided by investing activities	813		2,948
Financing Activities:
Proceeds from issuances of common stock	1,069		450
Net cash provided by financing activities	1,069		450
Effect of exchange rate changes on cash and cash equivalents	69		(162)
Net increase (decrease) in cash and cash equivalents	1,348		(2,026)
Cash and cash equivalents at beginning of period	22,159	[1]	18,561
Cash and cash equivalents at end of period	23,507		16,535
Supplemental schedule of cash flow information:
Income taxes paid	$ 99		$ 101

[1] Derived from the December 31,2011 audited Consolidated Financial Statements included in our Annual Report on Form 10-K, as filed with the Securities and Exchange Commission ("SEC") on March 9,2012.