Consolidated Statements of Consolidated Comprehensive Income (Loss) (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements of Consolidated Comprehensive Income (Loss) [Abstract]
Net unrealized losses on securities available for sale arising during period, net of tax benefit	$ 10,103	$ (65,136)
Reclassification adjustment for gains in net income, net of tax expense		40,526
Net loss arising during period, net of tax expense	690	521
Amortization or prior service cost included in net periodic pension cost, net of tax benefit	$ (122)	$ (123)