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8. Stock Plans (Tables)
12 Months Ended
Dec. 31, 2016
Compensation Related Costs [Abstract]  
Option Transaction
Options    Shares     Weighted Average Exercise Price   Weighted Average Remaining Contractual Term
Outstanding at December 31, 2015     50,000     $ 204.76    
Granted     --       --    
Exercised     --       --    
Outstanding at December 31, 2016     50,000     $ 204.76   1.9 years
Exercisable at December 31, 2016     45,000     $ 202.17   1.8 years
Restricted Stock Activity
Nonvested Shares    Shares     Weighted Average Award Date Fair Value Per Share  
Restricted stock at December 31, 2015     4,500     $ 212.53  
Granted in 2016     --       --  
Vested in 2016     (3,000 )   $ 204.76  
Restricted stock at December 31, 2016     1,500     $ 228.08  
Changes in Stock Units
Nonvested Stock Units  

 

 

 

Restricted Stock Units

    Weighted Average Award Date Fair Value Per Unit    

 

 

 

Director’s Stock Units

    Weighted Average Award Date Fair Value Per Unit  
Nonvested at December 31, 2015     15,428     $ 229.02       --        
Granted     88     $ 431.74       25     $ 390.43  
Vested     (6,128 )   $ 186.49       (25 )   $ 390.43  
Nonvested at December 31, 2016     9,388     $ 258.69       --          
Unrecognized Compensation Cost
    Unrecognized Compensation Cost    

Weighted Average

Remaining Years in Amortization Period

 
Stock options   $ 76,000       0.4  
Restricted stock     128,000       0.4  
Restricted stock units     622,000       2.5  
Total   $ 826,000