Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 203,479	$ 139,881
Accounts receivable, net	86,865	83,753
Inventories, net	161,076	140,364
Prepaid expenses and other current assets	19,371	11,681
Total current assets	470,791	375,679
Property, plant and equipment, net	29,840	25,328
Operating lease assets	4,542	5,849
Finance lease assets, net	20,544	21,880
Long-term restricted cash	753	6,653
Deferred income taxes	57,851	68,060
Other assets	40,303	44,645
Total assets	624,624	548,094
Current liabilities:
Accounts payable	24,013	25,341
Accrued compensation	24,562	7,631
Warranty	4,280	2,759
Income taxes	654	294
Deferred revenue	21,221	24,601
Current portion of finance lease obligation	756	399
Other current liabilities	8,945	7,639
Total current liabilities	84,431	68,664
Long-term finance lease obligation	47,393	48,149
Long-term deferred revenue	1,837	4,650
Other long-term liabilities	9,361	7,204
Total liabilities	143,022	128,667
Commitments and contingencies (Note 16)
Stockholders' equity:
Common stock, $0.001 par value, 75,000 shares authorized; 33,633 shares issued and outstanding at December 31, 2020; 32,585 shares issued and outstanding at December 31, 2019	34	33
Additional paid-in capital	570,102	559,878
Accumulated deficit	(91,969)	(140,226)
Accumulated other comprehensive income (loss)	3,435	(258)
Total stockholders' equity	481,602	419,427
Total liabilities and stockholders' equity	$ 624,624	$ 548,094