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Consolidated Statements of STOCKHOLDERS' EQUITY (USD $)
In Thousands, except Share data
Common Stock [Member]
Class A Common Stock [Member]
Treasury Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Total
Balance at Dec. 31, 2009 $ 25,288 $ 4,431 $ (76,044) $ 62,614 $ 244,953 $ (16,685)  
Balance (in shares) at Dec. 31, 2009 25,287,812 4,430,625 (8,291,557)        
Conversion of Class A Common Stock 577 (577)          
Conversion of Class A Common Stock (in shares) 576,950 (576,950)          
Stock compensation transactions, net 407            
Stock compensation transactions, net (in shares) 407,344            
Directors' Plan     85 186      
Directors' Plan (in shares)     8,880        
Purchases     0        
Purchases (in shares)     0        
Stock option and restricted stock issuances       1,898      
Tax benefit (cost) related to stock-based plans       800      
Amortization of restricted stock grants       1,716      
Net income (loss)         8,444   8,444
Cash dividends         (2,168)    
Pension liability adjustment, net of taxes           (2,944) (2,944)
Other           201  
Balance at Dec. 31, 2010 26,272 3,854 (75,959) 67,214 251,229 (19,428) 253,182
Balance (in shares) at Dec. 31, 2010 26,272,106 3,853,675 (8,282,677)        
Conversion of Class A Common Stock 212 (212)          
Conversion of Class A Common Stock (in shares) 211,440 (211,440)          
Stock compensation transactions, net 94            
Stock compensation transactions, net (in shares) 94,647            
Directors' Plan     112 157      
Directors' Plan (in shares)     11,653        
Purchases     0        
Purchases (in shares)     0        
Stock option and restricted stock issuances       (237)      
Tax benefit (cost) related to stock-based plans       15      
Amortization of restricted stock grants       2,060      
Net income (loss)         15,463   15,463
Cash dividends         (2,609)    
Pension liability adjustment, net of taxes           (5,769) (5,769)
Other           201  
Balance at Dec. 31, 2011 26,578 3,642 (75,847) 69,209 264,083 (24,996) 262,669
Balance (in shares) at Dec. 31, 2011 26,578,193 3,642,235 (8,271,024)        
Conversion of Class A Common Stock 345 (345)          
Conversion of Class A Common Stock (in shares) 344,802 (344,802)          
Stock compensation transactions, net 289            
Stock compensation transactions, net (in shares) 289,189            
Directors' Plan     249 147      
Directors' Plan (in shares)     25,649        
Purchases     (218)        
Purchases (in shares)     (18,182)        
Stock option and restricted stock issuances       (1,605)      
Tax benefit (cost) related to stock-based plans       289      
Amortization of restricted stock grants       2,553      
Net income (loss)         14,911   14,911
Cash dividends         (24,684)    
Pension liability adjustment, net of taxes           1,501 1,501
Other           117  
Balance at Dec. 31, 2012 $ 27,212 $ 3,297 $ (75,816) $ 73,803 $ 254,310 $ (23,378) $ 259,428
Balance (in shares) at Dec. 31, 2012 27,212,184 3,297,433 (8,263,557)