Employee Benefits (Schedule of net periodic pension (benefit) cost and amounts recognized in other comprehensive income (loss)) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Employee Benefits and Share-based Compensation, Noncash [Abstract]
Interest cost	$ 555	$ 345
Expected return on plan assets	(705)	(537)
Amortization of unrecognized loss	328	187
Net periodic cost (benefit)	$ 178	$ (5)