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Employee Retirement Plans - Schedule of Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]    
Pension Asset $ 192 $ 68
Pension Liability 22,019 25,157
Net liability amount recognized 21,827 $ 25,089
Contributions due to payable to plans $ 200