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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive (Loss) Income
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020   70,679,190      
Beginning balance at Dec. 31, 2020 $ 296,605 $ 7 $ 470,498 $ (5,010) $ (168,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (13,587)       (13,587)
Issuance of common stock to directors (in shares)   960      
Vesting of restricted stock units (in shares)   56,326      
Exercise of stock options (in shares)   88,269      
Exercise of stock options 625   625    
Stock-based compensation expense 7,894   7,894    
Other comprehensive income 4,023     4,023  
Ending balance (in shares) at Mar. 31, 2021   70,824,745      
Ending balance at Mar. 31, 2021 295,560 $ 7 479,017 (987) (182,477)
Beginning balance (in shares) at Dec. 31, 2021   71,462,094      
Beginning balance at Dec. 31, 2021 233,917 $ 7 497,128 (5,687) (257,531)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss $ (23,154)       (23,154)
Issuance of common stock to directors (in shares)   2,395      
Vesting of restricted stock units (in shares)   47,038      
Exercise of stock options (in shares) 815,833 815,833      
Exercise of stock options $ 24,404   24,404    
Stock-based compensation expense 6,943   6,943    
Other comprehensive income 646     646  
Ending balance (in shares) at Mar. 31, 2022   72,327,360      
Ending balance at Mar. 31, 2022 $ 242,756 $ 7 $ 528,475 $ (5,041) $ (280,685)