CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 247,418	$ 224,390
Accounts receivable, net of allowance of $596 and $519	23,617	24,177
Deferred commissions, current	6,112	5,429
Prepaid expenses and other current assets	12,298	10,520
Total current assets	289,445	264,516
Property and equipment, net	15,392	18,924
Operating lease right-of-use assets	57,815	56,986
Capitalized internal-use software, net	29,395	29,462
Acquisition intangible assets, net	18,330	21,207
Goodwill	465,913	468,764
Deferred commissions, non-current	11,105	10,018
Other assets	8,329	7,940
Total assets	895,724	877,817
Current liabilities:
Accounts payable	6,863	3,348
Accrued expenses and other current liabilities	20,940	15,198
Accrued compensation	22,643	32,149
Deferred revenue, current	186,917	169,872
Operating lease liabilities, current	9,123	8,318
Debt, current	1,900	1,900
Total current liabilities	248,386	230,785
Deferred revenue, non-current	626	760
Deferred tax liabilities	5,243	5,153
Debt, non-current	211,241	211,716
Operating lease liabilities, non-current	74,034	74,487
Other non-current liabilities	8,708	8,560
Total liabilities	548,238	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; 145,638 and 143,820 shares issued and outstanding)	1	1
Additional paid-in capital	869,174	835,444
Accumulated other comprehensive income	2,255	5,208
Accumulated deficit	(523,944)	(494,297)
Total stockholders’ equity	347,486	346,356
Total liabilities and stockholders’ equity	$ 895,724	$ 877,817