CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 116,184	$ 153,807
Accounts receivable, net of allowance of $100 and $115	11,535	7,336
Deferred commissions, current	2,864	1,981
Prepaid expenses and other current assets	8,253	7,081
Total current assets	138,836	170,205
Property and equipment, net	39,125	117,718
Operating lease right-of-use assets	65,134	0
Capitalized internal-use software, net	34,188	33,280
Acquisition intangible assets, net	36,116	9,324
Goodwill	461,110	336,861
Deferred commissions, non-current	5,148	3,317
Other assets	8,765	8,643
Total assets	788,422	679,348
Current liabilities:
Accounts payable	4,339	2,804
Accrued expenses and other current liabilities	14,727	9,692
Accrued compensation	20,326	20,070
Deferred revenue	132,074	101,236
Operating lease liabilities, current	8,107	0
Debt, current	1,900	1,900
Total current liabilities	181,473	135,702
Deferred tax liabilities	5,775	4,246
Debt, non-current	214,090	215,515
Financing obligation on leased facility	0	92,009
Operating lease liabilities, non-current	84,758	0
Other non-current liabilities	5,957	12,493
Total liabilities	492,053	459,965
Commitments and contingencies (Note 9)	0	0
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; 134,594 and 125,818 shares issued and outstanding)	1	1
Additional paid-in capital	680,957	551,937
Accumulated other comprehensive loss	(2,449)	(287)
Accumulated deficit	(382,140)	(332,268)
Total stockholders’ equity	296,369	219,383
Total liabilities and stockholders’ equity	$ 788,422	$ 679,348