Investments (Gain (Loss) On Investments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended						12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investments [Abstract]
Gross gains realized							$ 284	$ 185	$ 45
Gross losses realized							(4)	(152)	(1)
Net gains realized	$ 59	$ (20)	$ 221	$ 4	$ (25)	$ (21)	$ 280	$ 33	$ 44