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Goodwill and Other Intangible Assets - Estimated Amortization Expense for Intangibles Subject to Amortization (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2017 $ 2,427
2018 2,328
2019 2,130
2020 2,130
2021 2,130
Thereafter 3,264
Customer Relationships  
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2017 2,427
2018 2,328
2019 2,130
2020 2,130
2021 2,130
Thereafter $ 3,264