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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY - USD ($)
$ in Thousands
Total
Common Stock Issued
Additional Paid-in Capital
Treasury Stock
Accumulated Deficit
Balance beginning of period (in shares) at Dec. 31, 2020   112,703,926      
Balance, beginning of period at Dec. 31, 2020 $ (150) $ 113 $ 158,610 $ (7,449) $ (151,424)
Treasury stock, beginning balance (in shares) at Dec. 31, 2020       1,773,683  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Deemed dividends (926)   (926)    
Share-based compensation expense 11,115   11,115    
Exercise of stock options (in shares)       482,361  
Exercise of stock options 1,404   (1,184) $ 2,588  
Issuance of restricted stock (in shares)       810,405  
Issuance of restricted stock 0   (4,053) $ 4,053  
Restricted stock canceled/forfeited (in shares)       66,374  
Restricted stock shares canceled/forfeited 0   450 $ (450)  
Shares repurchased for tax withholding (in shares)       469,239  
Shares repurchased for tax withholding (4,751)     $ (4,751)  
Net loss (12,500)       (12,500)
Other (in shares)       239,502  
Other 0   (2,009) $ 2,009  
Balance end of period (in shares) at Sep. 30, 2021   112,703,926      
Balance, end of period at Sep. 30, 2021 (5,808) $ 113 162,003 $ (4,000) (163,924)
Treasury stock, ending balance (in shares) at Sep. 30, 2021       777,028  
Balance beginning of period (in shares) at Jun. 30, 2021   112,703,926      
Balance, beginning of period at Jun. 30, 2021 (7,137) $ 113 158,720 $ (4,385) (161,585)
Treasury stock, beginning balance (in shares) at Jun. 30, 2021       821,988  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Share-based compensation expense 3,811   3,811    
Exercise of stock options (in shares)       30,032  
Exercise of stock options 45   (250) $ 295  
Issuance of restricted stock (in shares)       48,630  
Issuance of restricted stock 0   (477) $ 477  
Restricted stock canceled/forfeited (in shares)       18,348  
Restricted stock shares canceled/forfeited 0   199 $ (199)  
Shares repurchased for tax withholding (in shares)       15,354  
Shares repurchased for tax withholding (188)     $ (188)  
Net loss (2,339)       (2,339)
Balance end of period (in shares) at Sep. 30, 2021   112,703,926      
Balance, end of period at Sep. 30, 2021 $ (5,808) $ 113 162,003 $ (4,000) (163,924)
Treasury stock, ending balance (in shares) at Sep. 30, 2021       777,028  
Balance beginning of period (in shares) at Dec. 31, 2021 112,703,926 112,703,926      
Balance, beginning of period at Dec. 31, 2021 $ 82 $ 113 165,695 $ (4,017) (161,709)
Treasury stock, beginning balance (in shares) at Dec. 31, 2021 778,710     778,710  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Share-based compensation expense $ 10,798   10,798    
Exercise of stock options (in shares) 285,001 133,762   151,239  
Exercise of stock options $ 574   (697) $ 1,271  
Issuance of restricted stock (in shares)   832,329   880,749  
Issuance of restricted stock 0 $ 1 (3,960) $ 3,959  
Restricted stock canceled/forfeited (in shares)       5,338  
Restricted stock shares canceled/forfeited 0   29 $ (29)  
Shares repurchased for tax withholding (in shares)       249,778  
Shares repurchased for tax withholding (1,191)     $ (1,191)  
Net loss $ (29,783)       (29,783)
Balance end of period (in shares) at Sep. 30, 2022 113,670,017 113,670,017      
Balance, end of period at Sep. 30, 2022 $ (19,520) $ 114 171,865 $ (7) (191,492)
Treasury stock, ending balance (in shares) at Sep. 30, 2022 1,838     1,838  
Balance beginning of period (in shares) at Jun. 30, 2022   113,609,274      
Balance, beginning of period at Jun. 30, 2022 $ (13,603) $ 114 169,352 $ (3) (183,066)
Treasury stock, beginning balance (in shares) at Jun. 30, 2022       1,003  
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Share-based compensation expense 2,372   2,372    
Exercise of stock options (in shares)   49,666   1,001  
Exercise of stock options 137   132 $ 5  
Issuance of restricted stock (in shares)   11,077      
Issuance of restricted stock 0        
Restricted stock canceled/forfeited (in shares)       1,836  
Restricted stock shares canceled/forfeited 0   9 $ (9)  
Net loss $ (8,426)       (8,426)
Balance end of period (in shares) at Sep. 30, 2022 113,670,017 113,670,017      
Balance, end of period at Sep. 30, 2022 $ (19,520) $ 114 $ 171,865 $ (7) $ (191,492)
Treasury stock, ending balance (in shares) at Sep. 30, 2022 1,838     1,838