CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 154,546	$ 153,807
Accounts receivable, net of allowance of $71 and $115	11,102	7,336
Deferred commissions, current	2,636	1,981
Prepaid expenses and other current assets	9,772	7,081
Total current assets	178,056	170,205
Property and equipment, net	42,526	117,718
Operating lease right-of-use assets	61,478	0
Capitalized internal-use software, net	34,445	33,280
Acquisition intangible assets, net	21,456	9,324
Goodwill	409,772	336,861
Deferred commissions, non-current	4,823	3,317
Other assets	8,607	8,643
Total assets	761,163	679,348
Current liabilities:
Accounts payable	3,037	2,804
Accrued expenses and other current liabilities	11,833	9,692
Accrued compensation	15,066	20,070
Deferred revenue	124,334	101,236
Operating lease liabilities, current	6,910	0
Debt, current	1,900	1,900
Total current liabilities	163,080	135,702
Deferred tax liabilities	6,181	4,246
Debt, non-current	214,565	215,515
Financing obligation on leased facility	0	92,009
Operating lease liabilities, non-current	82,763	0
Other non-current liabilities	5,045	12,493
Total liabilities	471,634	459,965
Commitments and contingencies (Note 9)
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; 132,776 and 125,818 shares issued and outstanding)	1	1
Additional paid-in capital	654,857	551,937
Accumulated other comprehensive income (loss)	501	(287)
Accumulated deficit	(365,830)	(332,268)
Total stockholders’ equity	289,529	219,383
Total liabilities and stockholders’ equity	$ 761,163	$ 679,348