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Consolidated Statement of Stockholders' Equity - USD ($)
Total
Common Stock Outstanding
Paid-In Capital
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income
Interest rate swaps:
Treasury Stock, Common
Retained Earnings
Beginning Balance (in shares) at Dec. 31, 2021   8,235,740          
Beginning Balance at Dec. 31, 2021 $ 100,095,000 $ 82,000 $ 38,013,000 $ 1,075,000   $ (28,617,000) $ 89,542,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 6,052,000           6,052,000
Change in post-retirement benefits, net of tax (127,000)     (127,000)      
Purchase of treasury stock (482,000)         (482,000)  
Restricted stock vested (in shares)   228,022          
Restricted stock vested 2,000 $ 2,000          
Share-based compensation 1,082,000   1,082,000        
Ending Balance (in shares) at Jun. 30, 2022   8,415,476          
Ending Balance at Jun. 30, 2022 106,622,000 $ 84,000 39,095,000 948,000   (29,099,000) 95,594,000
Beginning Balance (in shares) at Mar. 31, 2022   8,270,162          
Beginning Balance at Mar. 31, 2022 104,397,000 $ 83,000 38,514,000 1,011,000   (28,617,000) 93,406,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 2,188,000           2,188,000
Change in post-retirement benefits, net of tax $ (63,000)     (63,000)      
Purchase of treasury stock (in shares) (48,286)            
Purchase of treasury stock $ (482,000)         $ (482,000)  
Restricted stock vested (in shares)           193,600  
Restricted stock vested 1,000 $ 1,000          
Share-based compensation 581,000   581,000        
Ending Balance (in shares) at Jun. 30, 2022   8,415,476          
Ending Balance at Jun. 30, 2022 $ 106,622,000 $ 84,000 39,095,000 948,000   $ (29,099,000) 95,594,000
Beginning Balance (in shares) at Dec. 31, 2022 8,417,656 8,417,656          
Beginning Balance at Dec. 31, 2022 $ 116,125,000 $ 84,000 40,342,000 3,053,000   (29,099,000) 101,745,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 13,788,000           13,788,000
Change in post-retirement benefits, net of tax (187,000)     (187,000)      
Change in foreign currency hedge, net of tax $ 866,000     866,000      
Change in interest rate swaps, net of tax         $ 124,000    
Purchase of treasury stock (in shares) (48,286) (95,897)          
Purchase of treasury stock $ (1,907,000)         (1,907,000)  
Stock Issued During Period, Shares, Other   31,332          
Stock Issued During Period, Value, Other 0 $ 0          
Restricted stock vested (in shares)   249,981          
Restricted stock vested 2,000 $ 2,000          
Share-based compensation $ 1,487,000   1,487,000        
Ending Balance (in shares) at Jun. 30, 2023 8,603,072 8,603,072          
Ending Balance at Jun. 30, 2023 $ 130,298,000 $ 86,000 41,829,000 3,856,000   (31,006,000) 115,533,000
Beginning Balance (in shares) at Mar. 31, 2023   8,420,340          
Beginning Balance at Mar. 31, 2023 122,733,000 $ 84,000 41,073,000 3,101,000   (29,122,000) 107,597,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 7,936,000           7,936,000
Change in post-retirement benefits, net of tax (94,000)     (94,000)      
Change in foreign currency hedge, net of tax 483,000     483,000      
Change in interest rate swaps, net of tax         $ 366,000    
Purchase of treasury stock (in shares)   (94,579)          
Purchase of treasury stock (1,884,000)         (1,884,000)  
Stock Issued During Period, Shares, Other   27,330          
Stock Issued During Period, Value, Other 0 $ 0          
Restricted stock vested (in shares)   249,981          
Restricted stock vested 2,000 $ 2,000          
Share-based compensation $ 756,000   756,000        
Ending Balance (in shares) at Jun. 30, 2023 8,603,072 8,603,072          
Ending Balance at Jun. 30, 2023 $ 130,298,000 $ 86,000 $ 41,829,000 $ 3,856,000   $ (31,006,000) $ 115,533,000