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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Net sales | $ 140,710 | $ 131,617 | $ 258,961 | $ 245,285
Cost of sales | 111,696 | 102,490 | 208,814 | 192,795
Gross profit | 29,014 | 29,127 | 50,147 | 52,490
Selling, general and administrative expenses | 18,306 | 21,723 | 38,998 | 42,698
Restructuring charges | 41 | 138 | 45 | 171
Income from operations | 10,667 | 7,266 | 11,104 | 9,621
Interest expense | (1,349) | (1,586) | (2,527) | (3,010)
Interest income and other, net | (285) | (268) | (521) | (476)
Earnings before provision for income taxes | 9,033 | 5,412 | 8,056 | 6,135
Provision for income taxes | 2,399 | 2,292 | 2,724 | 2,269
Net earnings available to common stockholders | 6,634 | 3,120 | 5,332 | 3,866
Class A Common Share [Member] |  |  |  |
Net earnings available to common stockholders | $ 1,141 | $ 530 | $ 901 | $ 646
Net earnings per common share: |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.52 | $ 0.24 | $ 0.41 | $ 0.30
Weighted-average number of shares outstanding: |  |  |  |
Common share - basic and diluted (in shares) | 2,175 | 2,175 | 2,175 | 2,175
Dividends paid per common share: |  |  |  |
Common share (in dollars per share) | $ 0.06 | $ 0.06 | $ 0.12 | $ 0.12
Class B Common Share [Member] |  |  |  |
Net earnings available to common stockholders | $ 5,493 | $ 2,590 | $ 4,431 | $ 3,220
Net earnings per common share: |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.56 | $ 0.26 | $ 0.45 | $ 0.33
Weighted-average number of shares outstanding: |  |  |  |
Common share - basic and diluted (in shares) | 9,844 | 9,859 | 9,850 | 9,852
Dividends paid per common share: |  |  |  |
Common share (in dollars per share) | $ 0.07 | $ 0.07 | $ 0.14 | $ 0.14

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