Net Periodic Pension Cost (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Periodic Pension Cost [Abstract]
Interest cost	$ 129	$ 133	$ 388	$ 399
Amortization of net loss	26	41	78	122
Expected return on plan assets	(175)	(175)	(526)	(524)
Net periodic pension cost	$ (20)	(1)	$ (60)	(3)
Contributed amount		$ 299		$ 533