Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 117,778	$ 135,310
Marketable securities	49,494	0
Accounts receivable, net of allowances of $1,687 and $706 at September 30, 2020 and December 31, 2019, respectively	14,406	11,099
Deferred commissions	7,456	5,574
Prepaid expenses and other assets	4,565	5,050
Total current assets	193,699	157,033
Property and equipment, net	14,243	13,529
Deferred commissions, net of current portion	7,199	5,505
Operating lease, right-of-use assets	10,274	5,618
Goodwill	2,299	2,299
Intangible assets, net	4,413	5,482
Other assets, net	125	125
Total assets	232,252	189,591
Current liabilities
Accounts payable	2,037	2,049
Deferred revenue	37,258	29,566
Operating lease liabilities	1,904	2,331
Accrued wages and payroll related benefits	4,900	4,053
Accrued expenses and other	5,555	5,057
Total current liabilities	51,654	43,056
Deferred revenue, net of current portion	239	209
Operating lease liabilities, net of current portion	23,744	18,196
Total liabilities	75,637	61,461
Commitments and contingencies (Note 6)
Stockholders’ equity
Additional paid-in capital	324,682	263,943
Treasury stock, at cost	(26,905)	(20,430)
Accumulated deficit	(141,167)	(115,388)
Total stockholders’ equity	156,615	128,130
Total liabilities and stockholders’ equity	232,252	189,591
Class A common stock
Stockholders’ equity
Common stock	4	4
Class B common stock
Stockholders’ equity
Common stock	$ 1	$ 1