XML 61 R83.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefit Plans: (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Feb. 01, 1999
Profit Sharing Plan
        
Employee Benefit Plans:        
Number of common stock shares reserved for issuance       150,000
Employer match of employee contributions of first 3% of eligible compensation (as a percent) 100.00%      
Percentage of eligible compensation, matched 100% by employer 3.00%      
Employer match of employee contributions of next 2% of eligible compensation (as a percent) 50.00%      
Percentage of eligible compensation, matched 50% by employer 2.00%      
Employer contribution $ 570 $ 3,502 $ 3,189  
Deferred Compensation Plans
        
Employee Benefit Plans:        
Employer contribution $ 3,077 $ 586 $ 698