Net Periodic Pension Cost (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Periodic Pension Cost [Abstract]
Interest cost	$ 130	$ 133	$ 259	$ 266
Amortization of net loss	26	41	52	81
Expected return on plan assets	(176)	(175)	(351)	(349)
Net periodic pension cost	$ (20)	(1)	$ (40)	(2)
Contributed amount		$ 134		$ 234