UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 178,497	$ 36,073
Accounts receivable, net of allowances of $192 and $124 as of June 30, 2018 and December 31, 2017, respectively	43,631	60,850
Prepaid expenses and other current assets	8,488	6,040
Deferred commissions	10,093	9,551
Total current assets	240,709	112,514
Deferred commissions, net of current portion	21,825	20,404
Property and equipment, net	14,514	12,459
Intangible assets, net	3,310	4,092
Goodwill	119,656	119,656
Other-long term assets	395	2,436
Total assets	400,409	271,561
Current liabilities:
Accounts payable	4,228	2,481
Accrued expenses	16,073	18,846
Deferred revenue	129,927	130,165
Deferred rent	1,147	944
Total current liabilities	151,375	152,436
Deferred revenue, net of current portion	39,344	38,535
Warrant liability		2,766
Deferred rent, net of current portion	2,934	3,114
Deferred tax liability	37	33
Other long-term liabilities	42	42
Total liabilities	193,732	196,926
Commitments and contingencies (Note 10)
Stockholders’ equity (deficit):
Common stock, $0.001 par value, 500,000,000 shares and 156,650,000 shares authorized as of June 30, 2018 and December 31, 2017; 67,809,071 shares and 11,193,366 shares issued and 67,753,667 and 11,139,690 shares outstanding as of June 30, 2018 and December 31, 2017, respectively	68	11
Treasury stock, at cost, 55,404 and 53,676 shares as of June 30, 2018 and December 31, 2017, respectively	(6)	(6)
Additional-paid in capital	707,945	13,429
Accumulated deficit	(501,330)	(273,513)
Total stockholders’ equity (deficit)	206,677	(260,079)
Total liabilities, redeemable convertible and convertible preferred stock and stockholders' equity (deficit)	400,409	271,561
Redeemable convertible preferred stock
Current liabilities:
Convertible preferred stock	0	333,204
Series A convertible preferred stock
Current liabilities:
Convertible preferred stock	$ 0	$ 1,510