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Stock-Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum number of shares 793,368   793,368  
Shares available for future grants 354,090   354,090  
Stock based compensation $ 0 $ 0 $ 0 $ 0
Incentive Equity And Deferred Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum number of shares 243,101   243,101  
Share issuance, restricted sale period     1 year  
Shares available for future grants 88,169   88,169  
Stock based compensation $ 70,000 $ 78,000 $ 730,000 $ 165,000
Share based compensation cost not yet recognized $ 580,000   $ 580,000  
Share based compensation cost not yet recognized, period for recognition     1 year 10 months 21 days  
Increase (decrease) in shares outstanding     18,079  
Cash equivalent shares used to pay taxes     15,621  
Maximum [Member] | Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum option exercise period     10 years  
Maximum [Member] | Incentive Equity And Deferred Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award issuable period after date of grant     4 years  
Cliff-vesting period     4 years  
Minimum [Member] | Incentive Equity And Deferred Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award issuable period after date of grant     3 years  
Cliff-vesting period     3 years