CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net Income	$ 41,482	$ 41,954	$ 15,274
Other comprehensive (loss) income, before tax (benefit) expense:
Unrealized holding (losses) gains on securities arising during the period	(44,767)	(2,854)	9,727
Non-credit related gains (losses) on securities not expected to be sold	9,792	2,193	(425)
Less: reclassification adjustment for losses (gains) on securities included in net income	1,158	(192)	(2,185)
Unrealized gains (losses) for postretirement obligations:
Transition obligation	0	2	2
Net gain (loss)	219	(300)	(260)
Total other comprehensive (loss) income, before tax (benefit) expense	(33,598)	(1,151)	6,859
Income tax (benefit) expense related to items of other comprehensive (loss) income	(11,751)	(409)	2,400
Comprehensive Income	$ 19,635	$ 41,212	$ 19,733