Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statements Of Comprehensive Income Loss
Net income (loss)	$ 3,100	$ (5,182)
Unrealized gains on securities available for sale:
Unrealized holding gains arising during the period, pretax	(308)	717
Tax expense	120	(280)
Reclassification to realized (gains)		(452)
Tax expense		176
Postretirement Plans:
Amortization of unrecognized net actuarial loss	3	301
Tax expense	(1)	(117)
Amortization of prior service cost and transition obligation		9
Tax expense		(4)
Other comprehensive income (loss)	(186)	350
Comprehensive income (loss)	$ 2,914	$ (4,832)