Employee Benefit Plans (Net Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 452	$ 240	$ 271
Interest cost on projected benefit obligation	2,878	3,394	3,465
Expected return on plan assets	(5,189)	(5,697)	(2,297)
Amortization of loss	2,780	3,233	(2,048)
Net periodic pension (income) cost	$ 921	$ 1,170	$ (609)