Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Comprehensive Income, net of tax
Net income	$ 10,296	$ 6,756
Amortization of actuarial losses	63	174
Amortization of prior service credits	(3)	(6)
Unrealized gains (losses) on securities, net	5,360	(4,203)
Comprehensive income	$ 15,716	$ 2,721