Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 109,651	$ 86,737
Short-term investments	135,128	157,119
Accounts receivable, net of allowance of $510 and $702 as of March 31, 2017 and December 31, 2016, respectively	41,639	47,024
Prepaid expenses and other current assets	9,043	9,808
Total current assets	295,461	300,688
Long-term investments	63,684	45,725
Property and equipment, net	40,823	39,401
Deferred tax assets, net	37,279	16,590
Intangible assets, net	894	987
Goodwill	317	317
Restricted cash	1,200	1,200
Other noncurrent assets	1,863	2,096
Total assets	441,521	407,004
Current liabilities:
Accounts payable	4,338	2,051
Accrued liabilities	13,338	13,317
Deferred revenues, current	120,044	114,964
Total current liabilities	137,720	130,332
Deferred revenues, noncurrent	18,461	15,528
Other noncurrent liabilities	872	2,731
Total liabilities	157,053	148,591
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock, $0.001 par value; 20,000,000 shares authorized, no shares issued and outstanding at March 31, 2017 and December 31, 2016	0	0
Common stock, $0.001 par value; 1,000,000,000 shares authorized; 37,022,480 and 35,841,001 shares issued and outstanding at March 31, 2017 and December 31, 2016	37	36
Additional paid-in capital	262,620	266,794
Accumulated other comprehensive loss	(226)	(156)
Retained Earnings (Accumulated deficit)	22,037	(8,261)
Total stockholders’ equity	284,468	258,413
Total liabilities and stockholders’ equity	$ 441,521	$ 407,004