Accumulated Other Comprehensive Loss (Reclassifications out of Accumulated Comprehensive Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Prior service cost	$ (13)	$ 27
Amortization of actuarial loss	311	354
Total before tax	298	381
Income tax benefit	(108)	(142)
Amount reclassified out of accumulated other comprehensive loss	$ 190	$ 239