Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 111,031	$ 35,693
Short-term marketable securities	60,390	5,697
Accounts receivable—net of allowance of $730 and $318 at September 30, 2018 and December 31, 2017, respectively	47,510	34,312
Prepaid expenses	11,114	11,492
Deferred commissions	8,126	7,086
Other current assets	1,803	2,419
Total current assets	239,974	96,699
Property and equipment, net	27,024	23,926
Goodwill	12,354	12,354
Intangible assets, net	6,936	9,048
Noncurrent prepaid expenses	4,075	2,939
Deferred commissions, net of current portion	11,292	11,160
Other assets	526	497
Total assets	302,181	156,623
Current liabilities:
Accounts payable	11,458	2,892
Accrued liabilities	14,345	13,702
Deferred rent	1,303	936
Deferred revenue	136,179	99,773
Total current liabilities	163,285	117,303
Deferred revenue, net of current portion	2,494	1,889
Deferred rent, net of current portion	10,437	9,201
Other long-term liabilities	20	1,286
Total liabilities	176,236	129,679
Stockholders’ equity:
Common stock	3	3
Additional paid-in capital	385,789	250,899
Accumulated other comprehensive loss	(12)	(1)
Accumulated deficit	(259,835)	(223,957)
Total stockholders’ equity	125,945	26,944
Total liabilities and stockholders’ equity	$ 302,181	$ 156,623