Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Unrealized investment gains - taxes	$ 0	$ (233)	$ 664	$ (993)
Realized investment gains - taxes	0	(1)	(1)	(8)
Realized investment losses - taxes			273	0
Change in unfunded benefit obligation for pension and other postretirement benefit plans - taxes	$ 60	$ 99	$ 181	$ 297