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8. Notes Payable (Tables)
12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]  
Schedule Of Notes Payable
   December 31, 
   2016   2015 
         
Variable rate term loan due May 31, 2018. Principal and interest (3.11% at December 31, 2016) payable monthly with a balloon payment due at maturity.  $3,339   $3,846 
           
Variable rate term loan due May 31, 2019. Principal and interest (3.12% at December 31, 2016) payable monthly with a balloon payment due at maturity.   3,780    4,113 
Total notes payable   7,119    7,959 
Less current portion   (840)   (840)
Total long-term portion  $6,279   $7,119 
Maturities Of Notes Payable
2017  $840 
2018   3,165 
2019   3,114 
Total  $7,119