Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 342,867	$ 189,265
Short-term investments	469,012	535,817
Accounts receivable, net	125,508	104,813
Inventories	359,647	259,417
Other current assets	35,055	35,540
Total current assets	1,332,089	1,124,852
Property and equipment, net	356,687	362,962
Goodwill	6,571	6,571
Deferred tax assets, net	23,961	21,917
Other long-term assets	66,385	69,523
Total assets	1,785,693	1,585,825
Current liabilities:
Accounts payable	77,925	83,027
Accrued compensation and related benefits	85,238	62,635
Other accrued liabilities	91,324	81,282
Total current liabilities	254,487	226,944
Income tax liabilities	47,350	47,669
Other long-term liabilities	60,734	67,227
Total liabilities	362,571	341,840
Commitments and contingencies
Stockholders’ equity:
Common stock and additional paid-in capital: $0.001 par value; shares authorized: 150,000; shares issued and outstanding: 46,787 and 46,256, respectively	891,888	803,226
Retained earnings	545,920	424,879
Accumulated other comprehensive income (loss)	(14,686)	15,880
Total stockholders’ equity	1,423,122	1,243,985
Total liabilities and stockholders’ equity	$ 1,785,693	$ 1,585,825