CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 224,390	$ 131,035
Accounts receivable, net of allowance of $519 and $162	24,177	17,795
Deferred commissions, current	5,429	3,078
Prepaid expenses and other current assets	10,520	9,382
Total current assets	264,516	161,290
Property and equipment, net	18,924	35,072
Operating lease right-of-use assets	56,986	63,904
Capitalized internal-use software, net	29,462	33,156
Acquisition intangible assets, net	21,207	33,150
Goodwill	468,764	462,927
Deferred commissions, non-current	10,018	5,384
Other assets	7,940	9,376
Total assets	877,817	804,259
Current liabilities:
Accounts payable	3,348	2,677
Accrued expenses and other current liabilities	15,198	16,077
Accrued compensation	32,149	24,031
Deferred revenue, current	169,872	139,990
Operating lease liabilities, current	8,318	8,381
Debt, current	1,900	1,900
Total current liabilities	230,785	193,056
Deferred revenue, non-current	760	1,015
Deferred tax liabilities	5,153	4,870
Debt, non-current	211,716	213,616
Operating lease liabilities, non-current	74,487	82,668
Other non-current liabilities	8,560	7,050
Total liabilities	531,461	502,275
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; 143,820 and 136,054 shares issued and outstanding)	1	1
Additional paid-in capital	835,444	705,143
Accumulated other comprehensive income (loss)	5,208	(444)
Accumulated deficit	(494,297)	(402,716)
Total stockholders’ equity	346,356	301,984
Total liabilities and stockholders’ equity	$ 877,817	$ 804,259