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Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2013
Financial Instruments [Abstract]  
Cash and Available For Sale Securities Adjusted Cost Gross Unrealized Gains Gross Unrealized Losses and Fair Value By Significant Investment Category

The following table represents cash and the available-for-sale securities adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or investment securities as of March 31, 2013 and December 31, 2012:

 

    March 31, 2013  
    Cost     Unrealized
Gains		     Unrealized
Losses		     Accrued
Interest		     Estimated
Fair Value		     Cash & Cash
Equivalents		     Investment
Securities		  
                                           
Cash   $ 47,711,000     $ -     $ -     $ -     $ 47,711,000     $ 47,711,000     $ -  
                                                         
Level 1:                                                        
Money Market Accounts     1,519,000       -       -       -       1,519,000       1,519,000       -  
Mutual Funds     1,067,000       19,000       (4,000 )     -       1,082,000       -       1,082,000  
Corporate Equity Securities     1,767,000       550,000       (45,000 )     -       2,272,000       -       2,272,000  
Government & Agency Securities     6,337,000       160,000       (2,000 )     30,000       6,525,000       -       6,525,000  
      10,690,000       729,000       (51,000 )     30,000       11,398,000       1,519,000       9,879,000  
                                                         
Level 2:                                                        
Municipal Bonds     3,634,000       127,000       -       21,000       3,782,000       -       3,782,000  
Corporate Bonds     5,849,000       111,000       (1,000 )     49,000       6,008,000       -       6,008,000  
      9,483,000       238,000       (1,000 )     70,000       9,790,000       -       9,790,000  
                                                         
Total   $ 67,884,000     $ 967,000     $ (52,000 )   $ 100,000     $ 68,899,000     $ 49,230,000     $ 19,669,000  
                                                         
      December 31, 2012  
      Cost       Unrealized
Gains		       Unrealized
Losses		       Accrued
Interest		       Estimated
Fair Value		       Cash & Cash
Equivalents		       Investment
Securities		  
                                                         
Cash   $ 38,977,000     $ -     $ -     $ -     $ 38,977,000     $ 38,977,000     $ -  
                                                         
Level 1:                                                        
Money Market Accounts     960,000       -       -       -       960,000       960,000       -  
Mutual Funds     234,000       13,000       (1,000 )     -       246,000       -       246,000  
Corporate Equity Securities     1,853,000       489,000       (46,000 )     -       2,296,000       -       2,296,000  
Government & Agency Securities     7,004,000       180,000       (3,000 )     34,000       7,215,000       -       7,215,000  
      10,051,000       682,000       (50,000 )     34,000       10,717,000       960,000       9,757,000  
                                                         
Level 2:                                                        
Municipal Bonds     4,197,000       124,000       (4,000 )     27,000       4,344,000       -       4,344,000  
Corporate Bonds     5,772,000       136,000       (2,000 )     50,000       5,956,000       -       5,956,000  
      9,969,000       260,000       (6,000 )     77,000       10,300,000       -       10,300,000  
                                                         
Total   $ 58,997,000     $ 942,000     $ (56,000 )   $ 111,000     $ 59,994,000     $ 39,937,000     $ 20,057,000