Change in Accumulated Other Comprehensive Income (Changes to Accumulated Other Comprehensive Income By Components) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] [Roll Forward]
Beginning balance	$ 1,315	$ 305	$ 3,448
Other comprehensive (loss) income before reclassifications	(512)	2,519	(4,296)
Reclassifications from other comprehensive (loss) income	113	(990)	(465)
Tax effect of current period changes	135	(519)	1,618
Total other comprehensive (loss) income	(264)	1,010	(3,143)
Ending balance	1,051	1,315	305
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] [Roll Forward]
Beginning balance	1,466	547	3,822
Other comprehensive (loss) income before reclassifications	(564)	2,382	(4,497)
Reclassifications from other comprehensive (loss) income	(124)	(990)	(465)
Tax effect of current period changes	234	(473)	1,687
Total other comprehensive (loss) income	(454)	919	(3,275)
Ending balance	1,012	1,466	547
Change In Fair Value Of Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] [Roll Forward]
Beginning balance	(190)	(286)	(418)
Other comprehensive (loss) income before reclassifications	52	145	201
Reclassifications from other comprehensive (loss) income	237
Tax effect of current period changes	(99)	(49)	(69)
Total other comprehensive (loss) income	190	96	132
Ending balance	0	(190)	(286)
Change In Benefit Obligations And Plan Assets For The Post Retirement Benefit Plan [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] [Roll Forward]
Beginning balance	39	44	44
Other comprehensive (loss) income before reclassifications	0	(8)	0
Tax effect of current period changes	0	3	0
Total other comprehensive (loss) income	0	(5)	0
Ending balance	$ 39	$ 39	$ 44