Accumulated Other Comprehensive Income (Reclassification out of Accumulated Other Comprehensive Income (Loss) Alternate) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related income tax expense													$ (3,583)	$ (3,808)	$ (2,632)
Net Income Available to Common Shareholders	3,604	2,694	2,557	1,963	2,294	2,201	1,834	1,614	1,641	1,811	1,282	1,066	10,818	7,943	5,800
Reclassification out of AOCI [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other Income													313	835	2,831
Related income tax expense													(106)	(284)	(963)
Net Income Available to Common Shareholders													$ 207	$ 551	$ 1,868