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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ 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          
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) (4,197)           (4,197)  
Isuuance of common stock, shares     27 9        
Issuance of common stock from employee stock purchase plan 361 $ 142 $ 0   361 $ 142    
Issuance of restricted common stock, shares     10          
Issuance of restricted common stock 0   $ 0   0      
Cancellation and retirement of restricted common stock, shares     (10)          
Cancellation and surrender of restricted common stock (234)   $ 0   (234)      
Stock-based compensation expense 689       689      
Dividends on common stock (1,339)       (1,339)      
Other, shares     18          
Other 468       468      
Ending balance, shares outstanding at Mar. 31, 2020     17,909          
Ending Balance at Mar. 31, 2020 222,459   $ 259   242,234   82,016 (102,050)
Beginning balance, shares outstanding at Dec. 31, 2020     17,995          
Beginning Balance at Dec. 31, 2020 240,502   $ 260   239,989   102,303 (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Isuuance of common stock, shares     18 5        
Issuance of common stock from employee stock purchase plan $ 479 $ 177 $ 1   478 $ 177    
Exercise of stock options, shares 101   30          
Exercise of stock options $ (148)       (148)      
Issuance of restricted common stock, shares     9          
Issuance of restricted common stock 0   $ 0   0      
Cancellation and retirement of restricted common stock, shares     (9)          
Cancellation and surrender of restricted common stock (347)   $ 0   (347)      
Stock-based compensation expense 1,130       1,130      
Dividends on common stock (1,799)       (1,799)      
Adjustments to Additional Paid in Capital, Other         (1,400)      
Ending balance, shares outstanding at Mar. 31, 2021     18,048          
Ending Balance at Mar. 31, 2021 251,503   $ 261   238,056   $ 115,236 $ (102,050)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Repurchase $ (1,424)       $ (1,424)