Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Paid-in Capital
Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2019   39,589,755    
Beginning Balance at Dec. 31, 2019 $ 132,153 $ 396 $ 311,618 $ (179,861)
Increase (Decrease) in Stockholders' Equity        
Net loss (8,192)     (8,192)
Stock-based compensation 556   556  
Issuance of restricted and performance stock units (in shares)   137,634    
Issuance of restricted and performance stock units   $ 1 (1)  
Shares surrendered by employees to pay tax withholdings (in shares)   (36,963)    
Shares surrendered by employees to pay tax withholdings (639)   (639)  
Exercise of stock options and employee stock purchase plan (in shares)   48,341    
Exercise of stock options and employee stock purchase plan 316 $ 0 316  
Ending Balance (in shares) at Mar. 31, 2020   39,738,767    
Ending Balance at Mar. 31, 2020 $ 124,194 $ 397 311,850 (188,053)
Beginning Balance (in shares) at Dec. 31, 2020 40,618,766 40,618,766    
Beginning Balance at Dec. 31, 2020 $ 123,149 $ 406 326,390 (203,647)
Increase (Decrease) in Stockholders' Equity        
Net loss (6,660)     (6,660)
Stock-based compensation 2,694   2,694  
Issuance of restricted and performance stock units (in shares)   94,533    
Issuance of restricted and performance stock units   $ 1 (1)  
Exercise of stock options and employee stock purchase plan (in shares)   129,418    
Exercise of stock options and employee stock purchase plan $ 521 $ 1 520  
Ending Balance (in shares) at Mar. 31, 2021 40,842,717 40,842,717    
Ending Balance at Mar. 31, 2021 $ 119,704 $ 408 $ 329,603 $ (210,307)