Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 189,265	$ 334,944
Short-term investments	535,817	260,169
Accounts receivable, net	104,813	66,843
Inventories	259,417	157,062
Other current assets	35,540	22,980
Total current assets	1,124,852	841,998
Property and equipment, net	362,962	281,528
Goodwill	6,571	6,571
Deferred tax assets, net	21,917	18,556
Other long-term assets	69,523	59,838
Total assets	1,585,825	1,208,491
Current liabilities:
Accounts payable	83,027	38,169
Accrued compensation and related benefits	62,635	45,840
Other accrued liabilities	81,282	62,960
Total current liabilities	226,944	146,969
Income tax liabilities	47,669	37,062
Other long-term liabilities	67,227	57,873
Total liabilities	341,840	241,904
Commitments and contingencies
Stockholders’ equity:
Common stock and additional paid-in capital: $0.001 par value; shares authorized: 150,000; shares issued and outstanding: 46,256 and 45,267, respectively	803,226	657,701
Retained earnings	424,879	298,746
Accumulated other comprehensive income	15,880	10,140
Total stockholders’ equity	1,243,985	966,587
Total liabilities and stockholders’ equity	$ 1,585,825	$ 1,208,491