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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 USD ($) shares
Statement of Stockholders' Equity [Abstract] |
Pension and other postretirement adjustments, tax | $ 552
Amortization of forward starting swaps, tax | $ 635
Issuance of common stock from performance share units and exercise of stock options (in shares) | shares | 205,965
Issuance of common stock from exercise of stock options and deferred compensation plans, tax amount | $ 4,221
Repurchase of common stock (in shares) | shares | 82,000

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