Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Taxes, unrealized holding gains (losses) arising during the period	$ (6,759)	$ (631)	$ (8,137)	$ 1,147
Taxes, reclassification adjustment for net realized (gains) losses on securities recorded in income	2	105	124	(226)
Taxes, reclassification for OTTI credit losses recorded in income	$ 0	$ 0	$ 0	$ 221