Defined Benefit Plan (Schedule of Net Periodic Pension Cost (Benefit))(Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of net periodic pension cost (benefit)
Service cost	$ 290	$ 242
Interest cost	61	84
Expected return on plan assets	(291)	(392)
Prior service cost amortization	37	35
Deferred loss amortization	60	11
Net periodic pension cost (benefit)	$ 157	$ (20)