CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OTHER COMPREHENSIVE INCOME (LOSS)
Change in unrealized holding gains (losses) on investment securities, deferred income tax expense (benefit)	$ 5,866	$ 3,698
Reclassification adjustment for realized investment (gains) losses included in net income (loss), income tax (expense) benefit	(571)	(934)
Reclassification adjustment for amounts amortized into net periodic pension and postretirement benefit cost, deferred income tax (expense) benefit	$ (242)	$ 189