Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Mar. 31, 2016
Dec. 31, 2015
Condensed Consolidated Balance Sheets [Abstract]    
Common stock, par value $ 1.33 $ 1.33
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 43,854,381 44,785,674
Common stock, shares outstanding 43,854,381 44,785,674