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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) $ in Thousands | 9 Months Ended
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Sep. 30, 2016 USD ($) $ / shares shares
Statement of Stockholders' Equity [Abstract] |
Pension and other postretirement adjustments, tax | $ | $ 964
Amortization of forward starting swaps, tax | $ | $ 1,872
Issuance of common stock from performance share units and exercise of stock options (in shares) | shares | 447,378
Repurchase of common stock (in shares) | shares | 738,953
Cash dividends declared (in dollars per share) | $ / shares | $ 1.02

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