v2.4.0.6
SHAREHOLDER'S EQUITY (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Conversion Of Class B Common Stock [Abstract]      
Shares contributed to charitable organizations   170,000 90,000
Credit Facility $ 425,000,000    
Dividends And Shares Activitiy [Line Items]      
Dvidend Equivalent liability - short term 0 52,000  
Dvidend Equivalent liability - long term 221,000 228,000  
Total Dividend Equivalent Liability 221,000 280,000  
Dividend payments 0 0 0
Tax benefit recognized to paid-in capital 0 0 0
Shares of stock deemed repurchased 199,000 297,000 182,000
Amount recorded as financing activity (1,367,000) (3,057,000) (1,628,000)
The total cost to repurchase 0 0 0
Dividend Equivalents Paid 43,000 512,000 874,000
Credit Facility Available For Dividend Equity Or Debt Repurchase $ 40,000,000