CoNSolIdATEd STATEMENTS oF oPERATIoNS  (IN ThoUSANdS, ExCEPT PER ShARE dATA) Years ended december 31 2014 2013 2012 net sales $ 139,307  $ 139,223  $ 130,962  Cost of sales  102,427  98,209  92,643  Gross profit  36,880  41,014  38,319  selling, general, and administrative expenses  23,847  23,605  21,665  Restructuring costs  1,556 — —   (Gain) loss on sales of property, plant, and equipment  (84)  11  (12)  operating income  11,561  17,398  16,666  Other expenses: Interest expense, net  108 205 90 Other, net  (312)  —  2  total other (income) expense  (204) 205 92 income before income tax provision  11,765  17,193  16,574  Income tax expense  4,206  5,917  5,679  net income from consolidated operations  7,559  11,276  10,895  net income per share: Basic  $ 1.08  $ 1.65  $ 1.63  Diluted $ 1.05  $ 1.59  $ 1.55  Weighted average common shares: Basic 7,028 6,824 6,679 Diluted 7,175  7,105  7,028  the accompanying notes are an integral part of these consolidated financial statements. 18