CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Unrealized appreciation (depreciation) of available for sale investment securities during the year, income tax expense (benefit)	$ (9)	$ 9	$ 5
Pension and postretirement benefits, income tax expense (benefit)	$ 17,272	$ (2,532)	$ (13,232)