CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 300,695	$ 224,390
Accounts receivable, net of allowance of $767 and $519	25,587	24,177
Deferred commissions, current	7,381	5,429
Prepaid expenses and other current assets	10,614	10,520
Total current assets	344,277	264,516
Property and equipment, net	8,196	18,924
Operating lease right-of-use assets	54,328	56,986
Capitalized internal-use software, net	28,569	29,462
Acquisition intangible assets, net	13,242	21,207
Goodwill	465,076	468,764
Deferred commissions, non-current	12,661	10,018
Other assets	8,300	7,940
Total assets	934,649	877,817
Current liabilities:
Accounts payable	6,205	3,348
Accrued expenses and other current liabilities	26,002	15,198
Accrued compensation	38,895	32,149
Deferred revenue, current	196,729	169,872
Operating lease liabilities, current	9,428	8,318
Debt, current	1,900	1,900
Total current liabilities	279,159	230,785
Deferred revenue, non-current	877	760
Deferred tax liabilities	5,437	5,153
Debt, non-current	210,291	211,716
Operating lease liabilities, non-current	69,226	74,487
Other non-current liabilities	7,824	8,560
Total liabilities	572,814	531,461
Commitments and contingencies (Note 11)
Stockholders’ equity:
Preferred stock ($0.00001 par value; 100,000 shares authorized; no shares issued and outstanding)	0	0
Common stock ($0.00001 par value; 800,000 shares authorized; 148,799 and 143,820 shares issued and outstanding)	1	1
Additional paid-in capital	936,280	835,444
Accumulated other comprehensive income	1,638	5,208
Accumulated deficit	(576,084)	(494,297)
Total stockholders’ equity	361,835	346,356
Total liabilities and stockholders’ equity	$ 934,649	$ 877,817