Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 4,831,332	$ 3,109,322
Marketable securities	619,437	698,972
Accounts receivable, net	791,768	633,518
Inventories	219,218	167,502
Prepaid expenses and other current assets	232,565	213,515
Total current assets	6,694,320	4,822,829
Property and equipment, net	728,357	745,080
Goodwill	1,002,158	1,002,158
Intangible assets	400,000	400,000
Deferred tax assets	1,214,968	1,190,815
Other assets	176,564	157,583
Total assets	10,216,367	8,318,465
Current liabilities:
Accounts payable	101,451	87,610
Accrued expenses	1,545,407	1,116,912
Other current liabilities	151,782	130,305
Total current liabilities	1,798,640	1,334,827
Long-term finance lease liabilities	522,067	538,576
Long-term contingent consideration	187,300	176,500
Other long-term liabilities	189,118	183,318
Total liabilities	2,697,125	2,233,221
Commitments and contingencies	0	0
Shareholders’ equity:
Preferred stock, $0.01 par value; 1,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value; 500,000 shares authorized, 260,124 and 258,993 shares issued and outstanding, respectively	2,601	2,589
Additional paid-in capital	7,943,717	7,937,606
Accumulated other comprehensive loss	(14,121)	(1,973)
Accumulated deficit	(412,955)	(1,852,978)
Total shareholders’ equity	7,519,242	6,085,244
Total liabilities and shareholders’ equity	$ 10,216,367	$ 8,318,465