Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 42,965	$ 21,661
Short-term investments	2,431	36,978
Accounts receivable (net of allowances of $101 and $6, at June 30, 2020 and December 31, 2019, respectively)	9,983	18,981
Inventories	18,900	13,884
Prepaid expenses and other current assets	4,171	4,592
Total current assets	78,450	96,096
Property and equipment, net	7,865	8,056
Operating lease right-of-use asset, net	39,027	4,860
Other non-current assets	5,034	5,492
Developed technology, net	45,644	46,200
Goodwill	106,328	104,108
Total assets	282,348	264,812
Current liabilities:
Accounts payable	9,384	6,510
Accrued compensation and related benefits	6,757	5,160
Operating lease liabilities, current	2,170	1,833
Other accrued liabilities	5,758	7,515
Deferred revenue, current	14,279	11,803
Total current liabilities	38,348	32,821
Convertible notes, net	54,013	53,821
Deferred tax liability	9,655	11,494
Operating lease liabilities, non-current	39,139	4,323
Deferred revenue, non-current	7,936	8,168
Other non-current liabilities	538	573
Total liabilities	149,629	111,200
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000 shares authorized, no shares issued and outstanding at either June 30, 2020 or December 31, 2019	0	0
Common stock: $0.001 par value, 200,000 shares authorized at June 30, 2020 and December 31, 2019; 71,283 and 69,956 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively	71	70
Additional paid-in capital	786,193	777,765
Accumulated other comprehensive loss	(809)	(582)
Accumulated deficit	(652,736)	(623,641)
Total stockholders’ equity	132,719	153,612
Total liabilities and stockholders’ equity	$ 282,348	$ 264,812