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Condensed Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Revenue:        
Total revenue $ 26,496 $ 28,963 $ 84,803 $ 80,639
Cost of revenue:        
Total cost of revenue 12,458 13,141 38,412 37,801
Gross profit 14,038 15,822 46,391 42,838
Research and development 7,125 7,430 23,362 22,072
Selling, general and administrative 20,729 20,020 65,687 57,812
Total operating expenses 27,854 27,450 89,049 79,884
Loss from operations (13,816) (11,628) (42,658) (37,046)
Interest expense (444) (4,019) (3,636) (9,824)
Loss on extinguishment of debt 0 0 (9,000) 0
Other income, net 205 117 920 465
Loss before income taxes (14,055) (15,530) (54,374) (46,405)
Income tax benefit 1,168 780 2,269 2,167
Net loss $ (12,887) $ (14,750) $ (52,105) $ (44,238)
Net loss per share, basic and diluted (usd per share) $ (0.19) $ (0.38) $ (0.79) $ (1.13)
Shares used in computing net loss per share, basic and diluted (shares) 69,469 39,235 65,792 39,033
Product revenue        
Revenue:        
Total revenue $ 20,666 $ 24,242 $ 68,728 $ 66,496
Cost of revenue:        
Total cost of revenue 10,520 11,635 33,009 33,017
Service revenue        
Revenue:        
Total revenue 5,630 4,721 15,875 14,143
Cost of revenue:        
Total cost of revenue 1,938 1,506 5,403 4,784
Grant revenue        
Revenue:        
Total revenue $ 200 $ 0 $ 200 $ 0