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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Balance at Dec. 31, 2019 $ 53,435 $ 214 $ 96,255 $ (43,034)
Balance (in shares) at Dec. 31, 2019   21,443,000    
Issuance of unrestricted stock   $ 1 (1)  
Issuance of unrestricted stock (in shares)   94,000    
Shares surrendered by employees to pay taxes related to unrestricted stock (50)   (50)  
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)   (15,000)    
Stock-based compensation expense 83   83  
Net loss (1,060)     (1,060)
Balance at Mar. 31, 2020 52,408 $ 215 96,287 (44,094)
Balance (in shares) at Mar. 31, 2020   21,522,000    
Balance at Dec. 31, 2019 53,435 $ 214 96,255 (43,034)
Balance (in shares) at Dec. 31, 2019   21,443,000    
Net loss (4,201)      
Balance at Jun. 30, 2020 49,051 $ 214 96,072 (47,235)
Balance (in shares) at Jun. 30, 2020   21,390,000    
Balance at Mar. 31, 2020 52,408 $ 215 96,287 (44,094)
Balance (in shares) at Mar. 31, 2020   21,522,000    
Issuance of common stock under employee stock purchase plan 23   23  
Issuance of common stock under employee stock purchase plan (in shares)   7,000    
Stock-based compensation expense 230   230  
Repurchase of common stock (469) $ (1) (468)  
Repurchase of common stock (in shares)   (139,000)    
Net loss (3,141)     (3,141)
Balance at Jun. 30, 2020 49,051 $ 214 96,072 (47,235)
Balance (in shares) at Jun. 30, 2020   21,390,000    
Balance at Dec. 31, 2020 $ 45,670 $ 214 96,104 (50,648)
Balance (in shares) at Dec. 31, 2020 21,378,833 21,379,000    
Issuance of unrestricted stock   $ 1 (1)  
Issuance of unrestricted stock (in shares)   131,000    
Shares surrendered by employees to pay taxes related to unrestricted stock $ (54)   (54)  
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)   (16,000)    
Stock-based compensation expense 197   197  
Net loss (1,448)     (1,448)
Balance at Mar. 31, 2021 44,365 $ 215 96,246 (52,096)
Balance (in shares) at Mar. 31, 2021   21,494,000    
Balance at Dec. 31, 2020 $ 45,670 $ 214 96,104 (50,648)
Balance (in shares) at Dec. 31, 2020 21,378,833 21,379,000    
Net loss $ (2,990)      
Balance at Jun. 30, 2021 $ 43,287 $ 215 96,710 (53,638)
Balance (in shares) at Jun. 30, 2021 21,501,208 21,501,000    
Balance at Mar. 31, 2021 $ 44,365 $ 215 96,246 (52,096)
Balance (in shares) at Mar. 31, 2021   21,494,000    
Issuance of common stock under employee stock purchase plan 25   25  
Issuance of common stock under employee stock purchase plan (in shares)   7,000    
Stock-based compensation expense 439   439  
Net loss (1,542)     (1,542)
Balance at Jun. 30, 2021 $ 43,287 $ 215 $ 96,710 $ (53,638)
Balance (in shares) at Jun. 30, 2021 21,501,208 21,501,000