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Retirement Plans Expected Benefit Payments (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Compensation and Retirement Disclosure [Abstract]  
Defined Benefit Plan, Expected Future Benefit Payments, Next Rolling Twelve Months $ 1,557
Defined Benefit Plan, Expected Future Benefit Payments, Year Two 1,243
Defined Benefit Plan, Expected Future Benefit Payments, Year Three 1,463
Defined Benefit Plan, Expected Future Benefit Payments, Year Four 1,432
Defined Benefit Plan, Expected Future Benefit Payments, Year Five 1,480
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter $ 7,711