Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 86,737	$ 91,698
Short-term investments	157,119	87,268
Accounts receivable, net of allowance of $702 and $769 at December 31, 2016 and 2015, respectively	47,024	42,325
Prepaid expenses and other current assets	9,808	7,945
Total current assets	300,688	229,236
Long-term investments	45,725	43,277
Property and equipment, net	39,401	31,329
Deferred tax assets, net	16,590	16,079
Intangible assets, net	987	1,360
Restricted cash	1,200	0
Goodwill	317	317
Other noncurrent assets	2,096	1,916
Total assets	407,004	323,514
Current liabilities:
Accounts payable	2,051	2,368
Accrued liabilities	13,317	11,786
Deferred revenues, current	114,964	98,025
Total current liabilities	130,332	112,179
Deferred revenues, noncurrent	15,528	14,564
Other noncurrent liabilities	2,731	1,205
Total liabilities	148,591	127,948
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock: $0.001 par value; 20,000,000 shares authorized, no shares issued and outstanding at December 31, 2016 and 2015	0	0
Common stock, $0.001 par value; 1,000,000,000 shares authorized, 35,841,001 and 34,414,631 shares issued and outstanding at December 31, 2016 and 2015, respectively	36	34
Additional paid-in capital	266,794	223,228
Accumulated other comprehensive loss	(156)	(211)
Accumulated deficit	(8,261)	(27,485)
Total stockholders’ equity	258,413	195,566
Total liabilities and stockholders’ equity	$ 407,004	$ 323,514