XML 50 R5.htm IDEA: XBRL DOCUMENT v3.20.1
Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Total
Beginning Balance at Dec. 31, 2018 $ 44 $ 1,016,690 $ (180) $ (597,545) $ 419,009
Beginning Balance (in shares) at Dec. 31, 2018 44,037,026        
Increase (Decrease) in Stockholders' Equity          
Issuance of common stock under stock plan   2,061     2,061
Issuance of common stock under stock plan (in shares) 134,439        
Stock-based compensation expense   10,295     10,295
Unrealized gain (loss) on available-for-sale securities     270   270
Cumulative translation adjustment     (15)   (15)
Net loss       (87,407) (87,407)
Ending Balance at Mar. 31, 2019 $ 44 1,029,046 75 (684,952) 344,213
Ending Balance (in shares) at Mar. 31, 2019 44,171,465        
Beginning Balance at Dec. 31, 2019 $ 49 1,412,083 (2,534) (945,239) $ 464,359
Beginning Balance (in shares) at Dec. 31, 2019 49,272,223       49,272,223
Increase (Decrease) in Stockholders' Equity          
Issuance of common stock under stock plan $ 1 1,612     $ 1,613
Issuance of common stock under stock plan (in shares) 186,166        
Stock-based compensation expense   17,026     17,026
Initial public offering / Follow on offering, net of issuance costs $ 4 308,419     308,423
Initial public offering / Follow on offering, net of issuance costs (in shares) 4,710,144        
Unrealized gain (loss) on available-for-sale securities     2,492   2,492
Cumulative translation adjustment     (27)   (27)
Net loss       (110,955) (110,955)
Ending Balance at Mar. 31, 2020 $ 54 $ 1,739,140 $ (69) $ (1,056,194) $ 682,931
Ending Balance (in shares) at Mar. 31, 2020 54,168,533       54,168,533