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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Net sales | $ 548,184 | $ 491,611
Cost of sales | 438,414 | 389,262
Gross profit | 109,770 | 102,349
Selling, general and administrative expenses | 79,937 | 84,655
Restructuring charges | 222 | 308
Income from operations | 29,611 | 17,386
Interest expense | (5,317) | (6,802)
Interest income and other expense, net | (678) | (941)
Earnings before provision for income taxes | 23,616 | 9,643
Provision for income taxes | 2,907 | 21,540
Net earnings (loss) available to common shareholders | 20,709 | (11,897)
Class A Common Stock [Member] |  |
Net earnings (loss) available to common shareholders | $ 3,521 | $ (2,113)
Net earnings (loss) per common share: |  |
Common shares - basic and diluted (in dollars per share) | $ 1.62 | $ (0.97)
Weighted-average shares outstanding: |  |
Common shares - basic and diluted (in shares) | 2,175 | 2,175
Dividends paid per common share: |  |
Common shares (in dollars per share) | $ 0.24 | $ 0.24
Class B Common Stock [Member] |  |
Net earnings (loss) available to common shareholders | $ 17,188 | $ (9,784)
Net earnings (loss) per common share: |  |
Common shares - basic and diluted (in dollars per share) | $ 1.73 | $ (0.99)
Weighted-average shares outstanding: |  |
Common shares - basic and diluted (in shares) | 9,939 | 9,857
Dividends paid per common share: |  |
Common shares (in dollars per share) | $ 0.28 | $ 0.28

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