Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 3,109,322	$ 2,650,134
Marketable securities	698,972	518,108
Accounts receivable, net	633,518	409,688
Inventories	167,502	124,360
Prepaid expenses and other current assets	213,515	140,819
Total current assets	4,822,829	3,843,109
Property and equipment, net	745,080
Property and equipment, net		812,005
Goodwill	1,002,158	50,384
Intangible assets	400,000	0
Deferred tax assets	1,190,815	1,499,672
Other assets	157,583	40,728
Total assets	8,318,465	6,245,898
Current liabilities:
Accounts payable	87,610	110,987
Accrued expenses	1,116,912	958,899
Other current liabilities	130,305	50,406
Total current liabilities	1,334,827	1,120,292
Long-term finance lease liabilities	538,576
Capital lease obligations, excluding current portion		581,550
Long-term contingent consideration	176,500	0
Other long-term liabilities	183,318	108,853
Total liabilities	2,233,221	1,810,695
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, 258,993 and 255,172 shares issued and outstanding, respectively	2,589	2,546
Additional paid-in capital	7,937,606	7,421,476
Accumulated other comprehensive (loss) income	(1,973)	659
Accumulated deficit	(1,852,978)	(2,989,478)
Total shareholders’ equity	6,085,244	4,435,203
Total liabilities and shareholders’ equity	$ 8,318,465	$ 6,245,898