Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 271,085	$ 203,479
Accounts receivable, net	78,257	86,865
Inventories, net	196,812	161,076
Prepaid expenses and other current assets	23,990	19,371
Total current assets	570,144	470,791
Property, plant and equipment, net	32,921	29,840
Operating lease assets	8,106	4,542
Finance lease assets, net	19,563	20,544
Long-term restricted cash	756	753
Deferred income taxes	44,206	57,851
Other assets	35,282	40,303
Total assets	710,978	624,624
Current liabilities:
Accounts payable	35,499	24,013
Accrued compensation	23,548	24,562
Warranty	5,741	4,280
Income taxes	623	654
Deferred revenue	54,502	21,221
Current portion of finance lease obligation	921	756
Other current liabilities	16,361	8,945
Total current liabilities	137,195	84,431
Long-term finance lease obligation	46,672	47,393
Long-term deferred revenue	3,738	1,837
Other long-term liabilities	11,694	9,361
Total liabilities	199,299	143,022
Commitments and contingencies (Note 16)
Stockholders? equity:
Common stock, $0.001 par value, 75,000 shares authorized; 33,406 shares issued and outstanding at September 30, 2021; 33,633 shares issued and outstanding at December 31, 2020	33	34
Additional paid-in capital	559,913	570,102
Accumulated deficit	(50,017)	(91,969)
Accumulated other comprehensive income	1,750	3,435
Total stockholders? equity	511,679	481,602
Total liabilities and stockholders? equity	$ 710,978	$ 624,624