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Employee Benefit Plans (Schedule of Assumptions used to Determine Net Pension Cost) (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Employee Benefit Plans [Abstract]      
Weighted average discount rate 4.00% 5.00% 4.25%
Rate of increase in compensation levels   3.75% 3.75%
Expected long-term rate of return on assets 6.75% 6.75% 7.25%