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Employee Benefit Plans (Actuarial Assumptions) (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]      
Discount rate (percent) 4.54% 3.81%  
Discount rate (percent) 3.81% 4.75% 3.90%
Expected return on plan assets (percent) 8.00% 8.00% 8.00%