Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	[2]
Current assets:
Cash and cash equivalents	$ 566,204	$ 726,495	[1]
Short-term investments	931,718	1,052,803
Accounts receivable, net	574,810	437,051
Current portion of deferred commissions	139,890	109,643
Prepaid expenses and other current assets	132,071	95,959
Total current assets	2,344,693	2,421,951
Deferred commissions, less current portion	282,490	224,252
Long-term investments	581,856	391,442
Property and equipment, net	347,216	245,124
Intangible assets, net	100,582	86,916
Goodwill	148,845	128,728
Other assets	73,458	51,832
Total assets	3,879,140	3,550,245
Current liabilities:
Accounts payable	30,733	32,109
Accrued expenses and other current liabilities	330,246	253,257
Current portion of deferred revenue	1,651,594	1,210,695
Current portion of convertible senior notes, net	0	543,418
Total current liabilities	2,012,573	2,039,479
Deferred revenue, less current portion	38,597	36,120
Convertible senior notes, net	661,707	630,018
Other long-term liabilities	55,064	65,884
Total liabilities	2,767,941	2,771,501
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock $0.001 par value; 600,000,000 shares authorized; 180,175,355 and 174,275,864 shares issued and outstanding at December 31, 2018 and 2017, respectively	180	174
Additional paid-in capital	2,093,834	1,731,367
Accumulated other comprehensive income (loss)	(4,035)	5,767
Accumulated deficit	(978,780)	(958,564)
Total stockholders’ equity	1,111,199	778,744
Total liabilities and stockholders’ equity	$ 3,879,140	$ 3,550,245

[1] As adjusted to reflect the impact of the full retrospective adoption of Topic 606.

[2] As adjusted to reflect the impact of the full retrospective adoption of Topic 606.