CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 386,367	$ 356,332
Marketable securities	57,600	72,180
Short-term investments	20,024	14,510
Accounts and notes receivable, net of allowance of $2,424 and $2,203 as of March 31, 2022 and December 31, 2021, respectively	344,907	320,819
Contract assets, net	147,861	180,421
Inventory	122,150	108,688
Prepaid expenses and other current assets	67,208	56,540
Total current assets	1,146,117	1,109,490
Property and equipment, net	149,505	138,457
Deferred tax assets, net	108,840	127,193
Intangible assets, net	14,399	15,470
Goodwill	43,607	43,592
Long-term investments	17,731	31,232
Long-term notes receivable, net	10,184	11,256
Long-term contract assets, net	29,616	29,753
Strategic investments	154,452	83,520
Other long-term assets	98,003	98,247
Total assets	1,772,454	1,688,210
Current liabilities:
Accounts payable	49,348	32,220
Accrued liabilities	69,435	103,707
Current portion of deferred revenue	326,627	265,591
Customer deposits	18,411	10,463
Other current liabilities	6,858	6,540
Total current liabilities	470,679	418,521
Deferred revenue, net of current portion	140,938	185,721
Liability for unrecognized tax benefits	5,162	3,797
Long-term deferred compensation	5,833	5,679
Deferred tax liability, net	348	811
Long-term lease liabilities	20,112	20,440
Other long-term liabilities	4,593	5,392
Total liabilities	647,665	640,361
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock, $0.00001 par value; 25,000,000 shares authorized; no shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively
Common stock, $0.00001 par value; 200,000,000 shares authorized; 70,996,658 and 70,896,856 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	1	1
Additional paid-in capital	1,118,859	1,095,229
Treasury stock at cost, 20,220,227 shares as of March 31, 2022 and December 31, 2021	(155,947)	(155,947)
Retained earnings	164,754	109,883
Accumulated other comprehensive income (loss)	(2,878)	(1,317)
Total stockholders' equity	1,124,789	1,047,849
Total liabilities and stockholders' equity	$ 1,772,454	$ 1,688,210