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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Class A
Class B
Common Stock
Class A
Common Stock
Class B
Additional Paid-in Capital
Accumulated Deficit
Beginning Balance at Dec. 31, 2022 $ 44,112     $ 49 $ 385 $ 354,999 $ (311,321)
Beginning Balance (in shares) at Dec. 31, 2022       4,661 38,497    
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net 27       $ 3 24  
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net (in shares)         398    
Retirements of treasury stock (in shares)         (234)    
Retirements of treasury stock (2)       $ (2)    
Stock-based compensation from options and restricted stock, net of forfeitures 1,643         1,643  
Net Income (Loss) (9,910)           (9,910)
Ending Balance at Dec. 31, 2023 35,870     $ 49 $ 386 356,666 (321,231)
Ending Balance (in shares) at Dec. 31, 2023   4,661 38,661 4,661 38,661    
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net 3         3  
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net (in shares)         8    
Stock-based compensation from options and restricted stock, net of forfeitures 1,707         1,707  
Issuance of Class B common stock in connection with prior deferred issuance from acquisition         $ 4 (4)  
Issuance of Class B common stock in connection with prior deferred issuance from acquisition (in shares)         356    
Net Income (Loss) (4,947)           (4,947)
Ending Balance at Dec. 31, 2024 $ 32,633     $ 49 $ 390 $ 358,372 $ (326,178)
Ending Balance (in shares) at Dec. 31, 2024   4,661 39,025 4,661 39,025