CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 133,431	$ 98,645
Accounts receivable, net	88,529	66,227
Inventories	71,195	35,031
Prepaid expenses and other current assets	29,972	38,132
Total current assets	323,127	238,035
Property and equipment, net	42,721	43,141
Operating lease right-of-use assets	30,968	27,556
Other non-current assets	56,657	39,117
Goodwill	240,213	243,674
Total assets	693,686	591,523
Current liabilities:
Convertible debt, current	36,824	0
Other debts, current	4,992	11,771
Accounts payable	64,429	23,543
Deferred revenue	57,226	54,294
Operating lease liabilities, current	7,346	7,354
Other current liabilities	53,644	50,333
Total current liabilities	224,461	147,295
Convertible debt, non-current	98,941	129,507
Other debts, non-current	12,989	10,086
Operating lease liabilities, non-current	29,120	26,071
Other non-current liabilities	31,379	20,262
Total liabilities	396,890	333,221
Commitments and contingencies (Note 18)
Convertible debt (Note 11)	883	0
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; 102,959 and 98,204 shares issued and outstanding at December 31, 2021 and 2020, respectively	103	98
Additional paid-in capital	2,387,039	2,353,559
Accumulated deficit	(2,087,957)	(2,101,211)
Accumulated other comprehensive income (loss)	(3,272)	5,856
Total stockholders’ equity	295,913	258,302
Total liabilities and stockholders’ equity	$ 693,686	$ 591,523