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Incentive Plans (Details Narrative) - USD ($)
$ in Thousands
 1 Months Ended 9 Months Ended 12 Months Ended
Dec. 15, 2015
May. 05, 2015
Mar. 23, 2006
Sep. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Excess tax benefits recorded financing cash flows         $ 7 $ 49
Stock-based compensation cost         $ 886 868 900
Restricted Stock Awards [Member]              
Number of shares granted         104    
Number of shares forfeited         20    
Restricted Stock Units [Member]              
Number of shares granted         38    
Number of shares forfeited         5    
2006 Stock Plan [Member]              
Number of shares granted under plan     1,800,000        
Maximum number of shares available to participant     500,000        
Excess tax benefits recorded financing cash flows         $ 0 7 49
Stock-based compensation cost         886 868 900
Income tax benefit recognized for stock-based compensation arrangements         337 332 346
Unrecognized compensation cost related to non-vested         $ 1,616    
Unrecognized compensation cost related to non-vested,period         35 months    
Number of shares available for future grants         448,796    
2006 Stock Plan [Member] | Stock Option [Member]              
Total intrinsic value of options exercised         $ 13 51 366
Total fair value of options vested         $ 139 $ 168 $ 271
2006 Stock Plan [Member] | Stock Option [Member] | Employees [Member]              
Expiration period     10 years        
2006 Stock Plan [Member] | Stock Option [Member] | Employees [Member] | Minimum [Member]              
Vesting period     3 years        
2006 Stock Plan [Member] | Stock Option [Member] | Employees [Member] | Maximum [Member]              
Vesting period     5 years        
2006 Stock Plan [Member] | Stock Option [Member] | Directors [Member]              
Expiration period     10 years        
Vesting period     1 year        
2006 Stock Plan [Member] | Restricted Stock Awards [Member] | Minimum [Member]              
Number of shares granted 28,090            
Description of vesting rights

These shares vest in one third increments on the first, second and third anniversaries of the date of grant as long as the recipient is then employed by the Company.

            
2006 Stock Plan [Member] | Restricted Stock Awards [Member] | Maximum [Member]              
Number of shares granted 64,500            
Description of vesting rights

These shares vest in one third increments, on the third, fourth and fifth anniversaries of the date of grant as long as the recipient is then employed by the Company.

            
2006 Stock Plan [Member] | Restricted Stock Awards [Member] | New Members Of Management [Member]              
Number of shares granted   11,000          
Description of vesting rights  
These shares vest in one third increments, on the third, fourth and fifth anniversaries of the date of grant as long as the recipient is then employed by the Company.
          
2006 Stock Plan [Member] | Restricted Stock Units [Member] | Minimum [Member]              
Vesting period         1 year    
2006 Stock Plan [Member] | Restricted Stock Units [Member] | Maximum [Member]              
Vesting period         5 years    
2006 Stock Plan [Member] | Restricted Stock Units [Member] | Non-Employee Director [Member]              
Number of shares granted   38,290          
Description of vesting rights  
 Each award of restricted stock units vests at the date of the 2016 Annual Meeting of Stockholders.
          
Share price (in dollars per share)   $ 50          
Number of shares forfeited       5,470