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Goodwill and Other Intangible Assets (Estimated Amortization Expense of Other Intangible Assets) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Goodwill and Other Intangible Assets [Abstract]    
2017 $ 17,815  
2018 16,062  
2019 13,747  
2020 10,124  
2021 8,452  
Thereafter 21,557  
Carrying Value $ 87,757 $ 107,538
Estimated amortization expense succeeding period 5 years