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Deferred Compensation Plan (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Percentage of salary the participants may defer 50.00%    
Percentage of cash bonuses the participants may defer 100.00%    
Maximum matching contributions per year $ 10,000    
Employer matching contributions and earnings, vesting schedule 5 years    
Employer contributions to deferred compensation plan $ 172,000 $ 665,000 $ 996,000
First 3% Of The Participant's Deferred Pay      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Percentage of matching contribution 100.00%    
Matching contribution of gross pay 3.00%    
Next 2% Of The Participant's Deferred Pay      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Percentage of matching contribution 50.00%    
Matching contribution of deferred pay 2.00%