CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 151,235	$ 163,198
Short-term investments	74,920	108,216
Trade accounts receivable, net of allowances	24,613	30,754
Deferred costs, current portion	1,601	825
Deferred tax assets, current portion	306	2,869
Prepaid expenses and other current assets	9,124	17,002
Total current assets	261,799	322,864
Equipment, software, and leasehold improvements, at cost:
Equipment and software	86,721	98,041
Leasehold improvements	3,482	22,767
Total equipment, software, and leasehold improvements, at cost	90,203	120,808
Less accumulated depreciation and amortization	67,031	91,492
Net equipment, software, and leasehold improvements	23,172	29,316
Restricted cash equivalents and investments	3,000	10,000
Equity method investment	12,473	19,204
Available for sale securities	7,181	34,334
Other assets	2,332	3,153
Deferred costs, non-current portion	946	531
Deferred tax assets, net, non-current portion	1,409	4,911
Other intangible assets, net	12,993	3,275
Goodwill	17,476	6,309
Total assets	342,781	433,897
Current liabilities:
Accounts payable	19,987	19,013
Accrued and other current liabilities	42,792	57,530
Deferred revenue, current portion	7,498	8,675
Total current liabilities	70,277	85,218
Deferred revenue, non-current portion	166	169
Deferred rent	1,318	2,250
Deferred tax liabilities, net, non-current portion	1,556	432
Other long-term liabilities	483	3,100
Total liabilities	73,800	91,169
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 35,833 shares in 2013 and 35,324 shares in 2012	36	35
Additional paid-in capital	610,167	603,770
Accumulated other comprehensive loss	(47,695)	(26,540)
Retained deficit	(293,527)	(234,537)
Total shareholders’ equity	268,981	342,728
Total liabilities and shareholders’ equity	342,781	433,897
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