Consolidated Statements of Comprehensive Income (Loss) (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements Of Comprehensive Income Loss
Net income (loss)	$ 5,588	$ 3,290	$ 8,688	$ (1,892)
Unrealized gains on securities available for sale:
Unrealized holding gains arising during the period, pretax	(1,853)	186	(2,159)	901
Tax expense (benefit)	723	(72)	841	(350)
Reclassification to realized (gains)	(7)	3	(7)	(449)
Tax expense	3	(1)	3	175
Postretirement Plans:
Amortization of unrecognized net actuarial loss	15	82	18	383
Tax expense	(6)	(32)	(7)	(149)
Amortization of prior service cost and transition obligation		8		17
Tax expense		(3)		(7)
Other comprehensive income (loss)	(1,125)	171	(1,311)	521
Comprehensive income (loss)	$ 4,463	$ 3,461	$ 7,377	$ (1,371)