Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 146,569	$ 123,911
Marketable securities	127,305us-gaap_MarketableSecuritiesCurrent	48,688us-gaap_MarketableSecuritiesCurrent
Trade and other receivables, net	10,220	10,906
Deferred tax assets, net	21,243us-gaap_DeferredTaxAssetsNetCurrent	13,117us-gaap_DeferredTaxAssetsNetCurrent
Prepaid expenses and other current assets	7,841	6,961
Total current assets	313,178us-gaap_AssetsCurrent	203,583us-gaap_AssetsCurrent
Property and equipment, net	24,204us-gaap_PropertyPlantAndEquipmentNet	16,504us-gaap_PropertyPlantAndEquipmentNet
Goodwill	159,342us-gaap_Goodwill	159,342us-gaap_Goodwill
Intangible assets, net	38,315	47,213
Deferred tax assets, net – non-current	22,494us-gaap_DeferredTaxAssetsNetNoncurrent	33,211us-gaap_DeferredTaxAssetsNetNoncurrent
Other non-current assets	5,783us-gaap_OtherAssetsNoncurrent	1,812us-gaap_OtherAssetsNoncurrent
Total assets	563,316us-gaap_Assets	461,665us-gaap_Assets
Current liabilities:
Accounts payable	11,543us-gaap_AccountsPayableCurrent	2,422us-gaap_AccountsPayableCurrent
Accrued expenses and other liabilities	67,025	34,926
Deferred revenue	145,206us-gaap_DeferredRevenueCurrent	119,106us-gaap_DeferredRevenueCurrent
Total current liabilities	223,774us-gaap_LiabilitiesCurrent	156,454us-gaap_LiabilitiesCurrent
Other non-current liabilities	6,706us-gaap_OtherLiabilitiesNoncurrent	4,640us-gaap_OtherLiabilitiesNoncurrent
Total liabilities	230,480us-gaap_Liabilities	161,094us-gaap_Liabilities
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value, 300,000,000 authorized at December 31, 2014 and December 31, 2013; 93,944,742 and 91,441,771 shares issued and 93,899,968 and 91,441,771 outstanding at December 31, 2014 and December 31, 2013, respectively	94us-gaap_CommonStockValue	91us-gaap_CommonStockValue
Additional paid-in capital	495,912us-gaap_AdditionalPaidInCapital	466,047us-gaap_AdditionalPaidInCapital
Accumulated other comprehensive loss	(116)	(18)
Accumulated deficit	(163,054)	(165,549)
Total stockholders’ equity	332,836us-gaap_StockholdersEquity	300,571us-gaap_StockholdersEquity
Total liabilities and stockholders’ equity	$ 563,316	$ 461,665

Amount due from customers, clients, or other third-parties, or arising from transactions not separately disclosed, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

No definition available.