CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 98,645	$ 93,058
Accounts receivable, net	66,227	88,500
Inventories	35,031	29,042
Prepaid expenses and other current assets	38,132	40,762
Total current assets	238,035	251,362
Property and equipment, net	43,141	22,928
Operating lease right-of-use assets	27,556	27,491
Other non-current assets	38,609	41,305
Intangibles, net	508	4,461
Goodwill	243,674	239,780
Total assets	591,523	587,327
Current liabilities:
Convertible notes, short-term	0	43,375
Other debts and finance lease obligations, current	11,771	6,713
Accounts payable	23,543	40,933
Deferred revenue	54,294	37,117
Operating lease liabilities, current	7,354	8,881
Other current liabilities	50,333	54,880
Total current liabilities	147,295	191,899
Convertible notes, long-term	129,507	88,629
Other debts and finance lease obligations, long-term	10,086	10,511
Operating lease liabilities, long-term	26,071	25,766
Other non-current liabilities	20,262	15,666
Total liabilities	333,221	332,471
Commitments and contingencies (Note 18)
Convertible notes	0	2,410
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 98,204 and 91,875 shares issued and outstanding at December 31, 2020 and 2019, respectively	98	92
Additional paid-in capital	2,353,559	2,327,359
Accumulated deficit	(2,101,211)	(2,071,940)
Accumulated other comprehensive income (loss)	5,856	(3,065)
Total stockholders’ equity	258,302	252,446
Total liabilities and stockholders’ equity	$ 591,523	$ 587,327