CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 170,702	$ 106,333
Short-term investments	103,046	78,739
Trade accounts receivable, net of allowances for doubtful accounts and sales returns	35,716	41,165
Deferred costs, current portion	1,910	1,424
Prepaid expenses and other current assets	19,901	21,902
Total current assets	331,275	249,563
Equipment, software, and leasehold improvements, at cost:
Equipment and software	100,053	104,352
Leasehold improvements	26,184	25,947
Total equipment, software, and leasehold improvements, at cost	126,237	130,299
Less accumulated depreciation and amortization	93,287	92,825
Net equipment, software, and leasehold improvements	32,950	37,474
Restricted cash equivalents and investments	10,064	10,168
Equity method investments	3,703	7,798
Available for sale securities	36,819	37,204
Other assets	3,197	2,954
Deferred costs, non-current portion	170	843
Deferred tax assets, net, non-current portion	4,566	18,419
Other intangible assets, net	4,085	7,169
Goodwill	6,375	6,198
Total assets	433,204	377,790
Current liabilities:
Accounts payable	21,350	17,151
Accrued and other liabilities	62,215	59,194
Deferred revenue, current portion	11,558	11,835
Accrued loss on excess office facilities, current portion	747	596
Total current liabilities	95,870	88,776
Deferred revenue, non-current portion	159	195
Accrued loss on excess office facilities, non-current portion	1,229	2,151
Deferred rent	2,712	2,944
Deferred tax liabilities, net, non-current portion	1,085	1,443
Other long-term liabilities	10,290	10,994
Total liabilities	111,345	106,503
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 35,198 shares in 2012 and 34,422 shares in 2011	35	34
Additional paid-in capital	584,210	575,515
Accumulated other comprehensive loss	(24,774)	(24,884)
Retained deficit	(237,612)	(279,378)
Total shareholders' equity	321,859	271,287
Total liabilities and shareholders' equity	433,204	377,790
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