Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 174,745	$ 139,881
Accounts receivable, net	64,238	83,753
Inventories, net	136,068	140,364
Prepaid expenses and other current assets	16,621	11,681
Total current assets	391,672	375,679
Property, plant and equipment, net	26,363	25,328
Operating lease assets	5,583	5,849
Finance lease assets, net	21,528	21,880
Long-term restricted cash	6,671	6,653
Deferred income taxes	66,607	68,060
Other assets	44,149	44,645
Total assets	562,573	548,094
Current liabilities:
Accounts payable	26,089	25,341
Accrued compensation	9,237	7,631
Warranty	3,431	2,759
Income taxes	344	294
Deferred revenue	28,892	24,601
Current portion of finance lease obligation	573	399
Other current liabilities	6,807	7,639
Total current liabilities	75,373	68,664
Long-term finance lease obligation	47,976	48,149
Long-term deferred revenue	5,214	4,650
Other long-term liabilities	6,838	7,204
Total liabilities	135,401	128,667
Commitments and contingencies (Note 16)
Stockholders? equity:
Common stock, $0.001 par value, 75,000 shares authorized; 32,837 shares issued and outstanding at March 31, 2020; 32,585 shares issued and outstanding at December 31, 2019	33	33
Additional paid-in capital	559,182	559,878
Accumulated deficit	(130,730)	(140,226)
Accumulated other comprehensive loss	(1,313)	(258)
Total stockholders? equity	427,172	419,427
Total liabilities and stockholders? equity	$ 562,573	$ 548,094