CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Pension and other postretirement adjustments, tax	$ (1,877)
Amortization of forward starting swaps, tax	2,036
Issuance of common stock from issuance of unvested shares, exercise of stock options and deferred compensation plans (in shares)	1,318,268
Issuance of common stock from issuance of unvested shares, exercise of stock options and deferred compensation plans , tax	$ 4,024
Repurchase of common stock (in shares)	2,510,306
Cash dividend declared, per common share outstanding (in dollars per share)	$ 0.69