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Employee Benefit Plans (Schedule of Fair Value of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Fair Value Total [Member]    
Fair value of plan assets $ 35,489 $ 37,282
Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets 35,334 36,835
Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets 155 447
Fixed income investments - Money market funds [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 155 $ 447
Fixed income investments - Money market funds [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets
Fixed income investments - Money market funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets $ 155 $ 447
Fixed income investments - US government bond fund [Member] | Fair Value Total [Member]    
Fair value of plan assets 3,398 3,385
Fixed income investments - US government bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 3,398 $ 3,385
Fixed income investments - US government bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Fixed income investments - US corporate bond fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 3,357 $ 3,377
Fixed income investments - US corporate bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 3,357 $ 3,377
Fixed income investments - US corporate bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Fixed income investments - US corporate high yield bond fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 1,700 $ 1,741
Fixed income investments - US corporate high yield bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 1,700 $ 1,741
Fixed income investments - US corporate high yield bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Equity investments - Large cap value fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 14,703 $ 7,669
Equity investments - Large cap value fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 14,703 $ 7,669
Equity investments - Large cap value fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Equity investments - Large cap growth fund [Member] | Fair Value Total [Member]    
Fair value of plan assets   $ 7,694
Equity investments - Large cap growth fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets   $ 7,694
Equity investments - Large cap growth fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets  
Equity investments - Small cap growth fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 2,845 $ 3,162
Equity investments - Small cap growth fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 2,845 $ 3,162
Equity investments - Small cap growth fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Equity investments - Mid cap growth fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 3,541 $ 3,983
Equity investments - Mid cap growth fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 3,541 $ 3,983
Equity investments - Mid cap growth fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Equity investments - Foreign equity fund [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 3,544 $ 3,611
Equity investments - Foreign equity fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 3,544 $ 3,611
Equity investments - Foreign equity fund [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets
Equity investments - Company stock [Member] | Fair Value Total [Member]    
Fair value of plan assets $ 2,246 $ 2,213
Equity investments - Company stock [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member]    
Fair value of plan assets $ 2,246 $ 2,213
Equity investments - Company stock [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair value of plan assets