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Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Sep. 30, 2016
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock, stock dividend, percentage     10.00%  
Defined contribution plan, maximum annual contributions per employee, percent 80.00%      
Employer, contribution $ 388 $ 312    
Deferred fees 120 38    
Interest paid on deferred fees 34 $ 26    
Deferred compensation arrangement with individual, distributions paid 0      
Life settlement contracts, fair value 250      
Life settlement contracts, expense $ 5      
Award vesting period 3 years      
Award expiration period 10 years      
Options outstanding (in shares) 552,759 522,338   460,823
Options exercised, forfeited or expired (in shares) 1,480,353      
Number of shares available for grant (in shares) 79,472      
Compensation cost not yet recognized $ 422      
Compensation cost not yet recognized, period for recognition 2 years 1 month 6 days      
Director        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage 100.00%      
Executive Management        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage 100.00%      
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period 4 years      
Number of shares authorized (in shares) 518,157      
Number of shares available for grant (in shares) 149,804      
Compensation cost not yet recognized $ 719      
Compensation cost not yet recognized, period for recognition 2 years 8 months 12 days