CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Pension and other postretirement adjustments, tax	$ 1,245
Amortization of forward starting swaps, tax	1,363
Issuance of common stock from issuance of unvested shares, exercise of stock options and deferred compensation plans, shares	1,031,401
Issuance of common stock from issuance of unvested shares, exercise of stock options and deferred compensation plans, tax	$ 3,140
Repurchase of common stock, shares	1,629,561
Cash dividend declared, per common share outstanding	$ 0.46