CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Pension and other postretirement adjustments, tax	$ 790
Amortization of forward starting swaps, tax	$ 1,283
Issuance of common stock from issuance of unvested shares, exercise of stock options and deferred compensation plans (in shares)	493,943
Repurchase of common stock (in shares)	1,490,582
Cash dividends declared, per common share outstanding	$ 0.32