CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 83,332	$ 106,333
Short-term investments	83,681	78,739
Trade accounts receivable, net of allowances for doubtful accounts and sales returns	40,160	41,165
Deferred costs, current portion	1,338	1,424
Prepaid expenses and other current assets	24,984	21,902
Total current assets	233,495	249,563
Equipment, software, and leasehold improvements, at cost:
Equipment and software	108,173	104,352
Leasehold improvements	26,224	25,947
Total equipment, software, and leasehold improvements, at cost	134,397	130,299
Less accumulated depreciation and amortization	95,672	92,825
Net equipment, software, and leasehold improvements	38,725	37,474
Restricted cash equivalents and investments	10,173	10,168
Equity method investments	7,430	7,798
Available for sale securities	45,630	37,204
Other assets	2,960	2,954
Deferred costs, non-current portion	691	843
Deferred tax assets, net, non-current portion	18,320	18,419
Other intangible assets, net	6,177	7,169
Goodwill	6,297	6,198
Total assets	369,898	377,790
Current liabilities:
Accounts payable	17,935	17,151
Accrued and other liabilities	58,783	59,194
Deferred revenue, current portion	11,270	11,835
Accrued loss on excess office facilities, current portion	505	596
Total current liabilities	88,493	88,776
Deferred revenue, non-current portion	220	195
Accrued loss on excess office facilities, non-current portion	1,843	2,151
Deferred rent	2,867	2,944
Deferred tax liabilities, net, non-current portion	1,217	1,443
Other long-term liabilities	9,884	10,994
Total liabilities	104,524	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 34,541 shares in 2012 and 34,422 shares in 2011	35	34
Additional paid-in capital	578,506	575,515
Accumulated other comprehensive loss	(16,774)	(24,884)
Retained deficit	(296,393)	(279,378)
Total shareholders' equity	265,374	271,287
Total liabilities and shareholders' equity	369,898	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