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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 72,345 $ 21,661
Short-term investments 0 36,978
Accounts receivable (net of allowances of $324 and $6, at September 30, 2020 and December 31, 2019, respectively) 17,613 18,981
Grant receivable 7,456 0
Inventories 19,560 13,884
Prepaid expenses and other current assets 5,689 4,592
Total current assets 122,663 96,096
Property and equipment, net 7,531 8,056
Operating lease right-of-use asset, net 38,469 4,860
Other non-current assets 4,904 5,492
Developed technology, net 42,955 46,200
Goodwill 106,455 104,108
Total assets 322,977 264,812
Current liabilities:    
Accounts payable 10,971 6,510
Accrued compensation and related benefits 9,122 5,160
Operating lease liabilities, current 2,697 1,833
Other accrued liabilities 6,565 7,515
Deferred revenue, current 13,436 11,803
Total current liabilities 42,791 32,821
Convertible notes, net 54,121 53,821
Deferred tax liability 9,041 11,494
Operating lease liabilities, non-current 38,607 4,323
Deferred revenue, non-current 7,684 8,168
Deferred grant income, non-current 18,224 0
Other non-current liabilities 536 573
Total liabilities 171,004 111,200
Commitments and contingencies
Stockholders’ equity:    
Preferred stock, $0.001 par value, 10,000 shares authorized, no shares issued and outstanding at either September 30, 2020 or December 31, 2019 0 0
Common stock: $0.001 par value, 200,000 shares authorized at September 30, 2020 and December 31, 2019; 74,115 and 69,956 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively 74 70
Additional paid-in capital 810,923 777,765
Accumulated other comprehensive loss (289) (582)
Accumulated deficit (658,735) (623,641)
Total stockholders’ equity 151,973 153,612
Total liabilities and stockholders’ equity $ 322,977 $ 264,812