Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 1,275,536	$ 802,751
Marketable securities	44,270	25,758
Accounts receivable, net	569,817	377,969
Inventories	181,388	198,765
Prepaid expenses and other current assets	42,639	35,067
Total current assets	2,113,650	1,440,310
Property, plant and equipment, net	364,248	349,202
Marketable securities, non-current	20,726	37,852
Right-of-use assets	125,059	127,622
Goodwill	337,017	337,021
Intangible assets, net	91,584	98,655
Deferred tax asset	20,232	20,089
Other non-current assets	20,609	19,623
Total assets	3,093,125	2,430,374
Current liabilities:
Accounts payable	157,472	101,492
Accrued payroll and related expenses	27,820	40,385
Income taxes payable	205,240	66,945
Operating lease liabilities	9,715	10,039
Contingent consideration	5,957	5,986
Deferred consideration	41,970	41,945
Other current liabilities	44,482	56,728
Total current liabilities	492,656	323,520
Operating lease liabilities - non-current	135,668	128,556
Deferred consideration - non-current	37,448	36,491
Contingent consideration - non-current	87	87
Other non-current liabilities	12,344	12,358
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock, $0.001 par value per share; 5,000 shares authorized; none issued or outstanding at March 31, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value per share; 97,500 shares authorized; 41,846 and 41,686 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	42	42
Additional paid-in capital	285,508	279,768
Accumulated other comprehensive income	239	355
Retained earnings	2,129,133	1,649,197
Total stockholders’ equity	2,414,922	1,929,362
Total liabilities and stockholders’ equity	$ 3,093,125	$ 2,430,374