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Note 13. Fair Value of Financial Assets and Liabilities (Tables)
9 Months Ended
Sep. 30, 2016
Fair Value Disclosures [Abstract]  
Schedule Of Fair Value Assets And Liabilities
    September 30, 2016   December 31, 2015
         
    Level 1   Level 2   Level 3   Total   Level 1   Level 2   Level 3   Total
Assets                                
Cash equivalents ............................    $        153    $         -       $      -       $       153    $      700    $            -       $     -       $       700
Equity securities:                                
   Insurance .....................................                 -                  -               -                   -            5,046                  -              -             5,046
Consumer goods ..........................           2,337               -               -             2,337               -                     -              -                  -   
Bonds..............................................                 -          25,307            -           25,307               -             21,304           -           21,304
Options on equity securities...........                 -            2,127            -             2,127               -                     -              -                  -   
Non-qualified deferred compensation plan investments...           2,599               -               -             2,599         2,203                  -              -             2,203
Total assets at fair value ................    $     5,089    $ 27,434    $      -       $  32,523    $   7,949    $    21,304    $     -       $  29,253
                                 
Liabilities                                
Interest rate swaps .........................    $           -       $         -       $      -       $          -       $         -       $             2    $     -       $           2
Total liabilities at fair value ............    $           -       $         -       $      -       $          -       $         -       $             2    $     -       $           2