CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 2,435,381	$ 2,057,440
Marketable securities-available-for-sale (amortized cost $292,350 and $291,871 as of June 30, 2022 and December 31, 2021, respectively; allowance for credit losses $0 as of June 30, 2022 and December 31, 2021)	287,044	290,752
Accounts receivable	682,968	616,300
Inventory	54,502	27,904
Prepaid expenses and other current assets	165,950	126,278
Total current assets	3,625,845	3,118,674
Restricted cash and investments	1,644	1,720
Long term investments	149,784	221,266
Inventory	39,626	29,034
Property and equipment, net	721,328	723,920
Finance lease right-of-use assets, net	27,349	27,548
Other intangible assets, net	139,987	150,755
Goodwill	155,593	155,593
Deferred income tax asset	434,867	467,538
Other assets, net	23,012	37,304
Total assets	5,319,035	4,933,352
Current liabilities:
Accounts payable	194,770	172,110
Accrued compensation	93,145	108,962
Accrued and other current liabilities	598,808	533,595
Finance lease liabilities	3,036	2,635
Acquisition-related contingent consideration	36,915	37,006
Total current liabilities	926,674	854,308
Acquisition-related contingent consideration	200,085	206,994
Finance lease liabilities	31,157	31,632
Other liabilities	76,058	70,414
Total liabilities	1,233,974	1,163,348
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; none issued or outstanding
Common stock, $0.001 par value; 400,000,000 shares authorized; 221,875,396 and 221,084,433 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	222	221
Additional paid-in capital	4,688,985	4,567,111
Accumulated other comprehensive loss	(25,696)	(19,454)
Accumulated deficit	(578,450)	(777,874)
Total stockholders' equity	4,085,061	3,770,004
Total liabilities and stockholders' equity	$ 5,319,035	$ 4,933,352