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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Director [Member]
Common stock
Common stock
Director [Member]
Additional Paid-in Capital
Additional Paid-in Capital
Director [Member]
Retained Earnings [Member]
Treasury Stock
Beginning balance, shares outstanding at Dec. 31, 2019     17,855,000          
Beginning Balance at Dec. 31, 2019 $ 226,569   $ 259   $ 242,147   $ 86,213 $ (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net Income (Loss) 2,200           2,200  
Isuuance of common stock, shares     44,000 17,000        
Issuance of common stock from employee stock purchase plan 624 $ 294 $ 1   624 $ 294    
Issuance of restricted common stock, shares     10,000          
Issuance of restricted common stock 0              
Cancellation and retirement of restricted common stock, shares     (10,000)          
Cancellation and surrender of restricted common stock (235)       (235)      
Stock-based compensation expense 1,252       1,252      
Dividends on common stock (2,682)       (2,682)      
Other, shares     18,000          
Other 468   $ 468          
Ending balance, shares outstanding at Jun. 30, 2020     17,934,000          
Ending Balance at Jun. 30, 2020 228,491   $ 260   241,868   88,413 (102,050)
Beginning balance, shares outstanding at Mar. 31, 2020     17,909,000          
Beginning Balance at Mar. 31, 2020 222,459   $ 259   242,234   82,016 (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net Income (Loss) 6,397           6,397  
Isuuance of common stock, shares     17,000 8,000        
Issuance of common stock from employee stock purchase plan 263 147 $ 1   262 147    
Stock-based compensation expense 568       568      
Dividends on common stock (1,343)       (1,343)      
Ending balance, shares outstanding at Jun. 30, 2020     17,934,000          
Ending Balance at Jun. 30, 2020 228,491   $ 260   241,868   88,413 (102,050)
Beginning balance, shares outstanding at Dec. 31, 2020     17,995,000          
Beginning Balance at Dec. 31, 2020 240,502   $ 260   239,989   102,303 (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net Income (Loss) 6,766           6,766  
Isuuance of common stock, shares     32,000 10,000        
Issuance of common stock from employee stock purchase plan $ 840 337 $ 1   839 337    
Exercise of stock options, shares 281,629   115,000          
Exercise of stock options $ (95)   $ 1   (96)      
Issuance of restricted common stock, shares     9,000          
Issuance of restricted common stock 0              
Cancellation and retirement of restricted common stock, shares     (10,000)          
Cancellation and surrender of restricted common stock (347)       (347)      
Stock-based compensation expense 2,200       2,200      
Dividends on common stock (3,607)       (3,607)      
Adjustments to Additional Paid in Capital, Other (1,424)       (1,424)      
Treasury stock acquired $ (12,301)             (12,301)
Treasury Stock, Shares, Acquired 324,700   325,000          
Ending balance, shares outstanding at Jun. 30, 2021     17,826,000          
Ending Balance at Jun. 30, 2021 $ 232,871   $ 262   237,891   109,069 (114,351)
Beginning balance, shares outstanding at Mar. 31, 2021     18,048,000          
Beginning Balance at Mar. 31, 2021 251,503   $ 261   238,056   115,236 (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net Income (Loss) (6,167)           (6,167)  
Isuuance of common stock, shares     14,000 5,000        
Issuance of common stock from employee stock purchase plan $ 361 $ 160     361 $ 160    
Exercise of stock options, shares 180,629   85,000          
Exercise of stock options $ 53   $ 1   52      
Cancellation and retirement of restricted common stock, shares     (1,000)          
Cancellation and surrender of restricted common stock 0       0      
Stock-based compensation expense 1,070       1,070      
Dividends on common stock (1,808)       (1,808)      
Treasury stock acquired $ (12,301)             (12,301)
Treasury Stock, Shares, Acquired 324,700   325,000          
Ending balance, shares outstanding at Jun. 30, 2021     17,826,000          
Ending Balance at Jun. 30, 2021 $ 232,871   $ 262   $ 237,891   $ 109,069 $ (114,351)