Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Comprehensive Income
Net income	$ 11,685	$ 9,627	$ 21,981	$ 16,383
Amortization of actuarial losses	98	174	161	348
Amortization of prior service credits	(7)	(6)	(10)	(12)
OTTI charges included in income		283		283
Unrealized gains (losses) on securities, net	6,513	(15,634)	11,873	(19,837)
Comprehensive income (loss)	$ 18,289	$ (5,556)	$ 34,005	$ (2,835)