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           Commitments And Contingencies (Annual Requirements For Principal Payments On The Mortgage) (Details) (USD $) 
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           Dec. 31, 2012 
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| Commitments And Contingencies [Abstract] | |
| 2013 | $ 457,000 | 
| 2014 | 490,000 | 
| 2015 | 524,000 | 
| 2016 | $ 104,000 | 
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- Details 
          
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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