CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 114,073	$ 151,235
Short-term investments	63,948	74,920
Trade accounts receivable, net of allowances	17,679	24,613
Deferred costs, current portion	1,023	1,601
Deferred tax assets, net, current portion	296	306
Prepaid expenses and other current assets	8,382	9,124
Total current assets	205,401	261,799
Equipment, software, and leasehold improvements, at cost:
Equipment and software	83,230	86,721
Leasehold improvements	3,616	3,482
Total equipment, software, and leasehold improvements, at cost	86,846	90,203
Less accumulated depreciation and amortization	68,392	67,031
Net equipment, software, and leasehold improvements	18,454	23,172
Restricted cash equivalents and investments	3,000	3,000
Equity method investment	10,000	12,473
Available for sale securities	2,848	7,181
Other assets	2,925	2,332
Deferred costs, non-current portion	913	946
Deferred tax assets, net, non-current portion	1,424	1,409
Other intangible assets, net	10,954	12,993
Goodwill	17,615	17,476
Total assets	273,534	342,781
Current liabilities:
Accounts payable	18,155	19,987
Accrued and other current liabilities	25,885	41,893
Deferred tax liabilities, net, current portion	768	899
Deferred revenue, current portion	6,908	7,498
Total current liabilities	51,716	70,277
Deferred revenue, non-current portion	143	166
Deferred rent	1,293	1,318
Deferred tax liabilities, net, non-current portion	1,805	1,556
Other long-term liabilities	563	483
Total liabilities	55,520	73,800
Commitments and contingencies
Preferred stock, $0.001 par value, no shares issued and outstanding:
Common stock, $0.001 par value authorized 250,000 shares; issued and outstanding 36,034 shares in 2014 and 35,833 shares in 2013	36	36
Additional paid-in capital	616,260	610,167
Accumulated other comprehensive loss	(53,778)	(47,695)
Retained deficit	(344,504)	(293,527)
Total shareholders’ equity	218,014	268,981
Total liabilities and shareholders’ equity	273,534	342,781
Preferred stock, Series A
Preferred stock, $0.001 par value, no shares issued and outstanding:
Preferred stock	0	0
Preferred stock, Undesignated series
Preferred stock, $0.001 par value, no shares issued and outstanding:
Preferred stock	$ 0	$ 0